Finding the Fourth Proportional to 1,354.82, 1,869.72 and 787.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,354.82 : 1,869.72 = 787.82 : x
2. Step 2: Convert to fraction form
   1,354.82/1,869.72 = 787.82/x
3. Step 3: Cross multiply
   1,354.82x = 1,869.72 × 787.82
4. Step 4: Simplify right side
   1,354.82x = 1,473,002.81
5. Step 5: Solve for x
   x = 1,473,002.81/1,354.82
6. Step 6: Final answer
   x = 1,087.23