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Finding the Fourth Proportional to 1,940.80, 2,914.44 and 1,076.80

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Solution

The fourth proportional to 1,940.80, 2,914.44 and 1,076.80 is: 1,617.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,940.80 : 2,914.44 = 1,076.80 : x
  2. Step 2: Convert to fraction form
    1,940.80/2,914.44 = 1,076.80/x
  3. Step 3: Cross multiply
    1,940.80x = 2,914.44 × 1,076.80
  4. Step 4: Simplify right side
    1,940.80x = 3,138,268.99
  5. Step 5: Solve for x
    x = 3,138,268.99/1,940.80
  6. Step 6: Final answer
    x = 1,617.00

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