Finding the Fourth Proportional to 981.91, 1,354.46 and 716.00

Step by Step Solution

1. Step 1: Write the proportion equation
   981.91 : 1,354.46 = 716.00 : x
2. Step 2: Convert to fraction form
   981.91/1,354.46 = 716.00/x
3. Step 3: Cross multiply
   981.91x = 1,354.46 × 716.00
4. Step 4: Simplify right side
   981.91x = 969,787.04
5. Step 5: Solve for x
   x = 969,787.04/981.91
6. Step 6: Final answer
   x = 987.66