Finding the Fourth Proportional to 1,066.96, 1,472.29 and 787.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.96 : 1,472.29 = 787.34 : x
2. Step 2: Convert to fraction form
   1,066.96/1,472.29 = 787.34/x
3. Step 3: Cross multiply
   1,066.96x = 1,472.29 × 787.34
4. Step 4: Simplify right side
   1,066.96x = 1,159,192.81
5. Step 5: Solve for x
   x = 1,159,192.81/1,066.96
6. Step 6: Final answer
   x = 1,086.44