Finding the Fourth Proportional to 1,772.49, 2,445.89 and 986.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,772.49 : 2,445.89 = 986.52 : x
2. Step 2: Convert to fraction form
   1,772.49/2,445.89 = 986.52/x
3. Step 3: Cross multiply
   1,772.49x = 2,445.89 × 986.52
4. Step 4: Simplify right side
   1,772.49x = 2,412,919.40
5. Step 5: Solve for x
   x = 2,412,919.40/1,772.49
6. Step 6: Final answer
   x = 1,361.32