Finding the Fourth Proportional to 1,376.62, 1,900.06 and 787.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,376.62 : 1,900.06 = 787.49 : x
2. Step 2: Convert to fraction form
   1,376.62/1,900.06 = 787.49/x
3. Step 3: Cross multiply
   1,376.62x = 1,900.06 × 787.49
4. Step 4: Simplify right side
   1,376.62x = 1,496,278.25
5. Step 5: Solve for x
   x = 1,496,278.25/1,376.62
6. Step 6: Final answer
   x = 1,086.92