Finding the Fourth Proportional to 1,347.43, 1,858.83 and 787.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,347.43 : 1,858.83 = 787.92 : x
2. Step 2: Convert to fraction form
   1,347.43/1,858.83 = 787.92/x
3. Step 3: Cross multiply
   1,347.43x = 1,858.83 × 787.92
4. Step 4: Simplify right side
   1,347.43x = 1,464,605.39
5. Step 5: Solve for x
   x = 1,464,605.39/1,347.43
6. Step 6: Final answer
   x = 1,086.96