Finding the Fourth Proportional to 1,347.27, 1,859.61 and 787.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,347.27 : 1,859.61 = 787.96 : x
2. Step 2: Convert to fraction form
   1,347.27/1,859.61 = 787.96/x
3. Step 3: Cross multiply
   1,347.27x = 1,859.61 × 787.96
4. Step 4: Simplify right side
   1,347.27x = 1,465,298.30
5. Step 5: Solve for x
   x = 1,465,298.30/1,347.27
6. Step 6: Final answer
   x = 1,087.61