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Finding the Fourth Proportional to 1,978.62, 2,967.66 and 924.80

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Solution

The fourth proportional to 1,978.62, 2,967.66 and 924.80 is: 1,387.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978.62 : 2,967.66 = 924.80 : x
  2. Step 2: Convert to fraction form
    1,978.62/2,967.66 = 924.80/x
  3. Step 3: Cross multiply
    1,978.62x = 2,967.66 × 924.80
  4. Step 4: Simplify right side
    1,978.62x = 2,744,491.97
  5. Step 5: Solve for x
    x = 2,744,491.97/1,978.62
  6. Step 6: Final answer
    x = 1,387.07

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