Finding the Fourth Proportional to 1,066.98, 1,472.03 and 787.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.98 : 1,472.03 = 787.88 : x
2. Step 2: Convert to fraction form
   1,066.98/1,472.03 = 787.88/x
3. Step 3: Cross multiply
   1,066.98x = 1,472.03 × 787.88
4. Step 4: Simplify right side
   1,066.98x = 1,159,785.69
5. Step 5: Solve for x
   x = 1,159,785.69/1,066.98
6. Step 6: Final answer
   x = 1,086.98