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Finding the Fourth Proportional to 1,978,407.80, 2,967,611.70 and 1,170,092.60

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Solution

The fourth proportional to 1,978,407.80, 2,967,611.70 and 1,170,092.60 is: 1,755,138.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978,407.80 : 2,967,611.70 = 1,170,092.60 : x
  2. Step 2: Convert to fraction form
    1,978,407.80/2,967,611.70 = 1,170,092.60/x
  3. Step 3: Cross multiply
    1,978,407.80x = 2,967,611.70 × 1,170,092.60
  4. Step 4: Simplify right side
    1,978,407.80x = 3,472,380,489,843.42
  5. Step 5: Solve for x
    x = 3,472,380,489,843.42/1,978,407.80
  6. Step 6: Final answer
    x = 1,755,138.90

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