Finding the Fourth Proportional to 1,377.02, 1,899.82 and 787.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.02 : 1,899.82 = 787.14 : x
2. Step 2: Convert to fraction form
   1,377.02/1,899.82 = 787.14/x
3. Step 3: Cross multiply
   1,377.02x = 1,899.82 × 787.14
4. Step 4: Simplify right side
   1,377.02x = 1,495,424.31
5. Step 5: Solve for x
   x = 1,495,424.31/1,377.02
6. Step 6: Final answer
   x = 1,085.99