Finding the Fourth Proportional to 2,374.18, 3,561.55 and 988.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,374.18 : 3,561.55 = 988.45 : x
2. Step 2: Convert to fraction form
   2,374.18/3,561.55 = 988.45/x
3. Step 3: Cross multiply
   2,374.18x = 3,561.55 × 988.45
4. Step 4: Simplify right side
   2,374.18x = 3,520,414.10
5. Step 5: Solve for x
   x = 3,520,414.10/2,374.18
6. Step 6: Final answer
   x = 1,482.79