Finding the Fourth Proportional to 2,527.30, 3,787.35 and 986.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,527.30 : 3,787.35 = 986.50 : x
2. Step 2: Convert to fraction form
   2,527.30/3,787.35 = 986.50/x
3. Step 3: Cross multiply
   2,527.30x = 3,787.35 × 986.50
4. Step 4: Simplify right side
   2,527.30x = 3,736,220.78
5. Step 5: Solve for x
   x = 3,736,220.78/2,527.30
6. Step 6: Final answer
   x = 1,478.34