Finding the Fourth Proportional to 2,373.60, 3,561.48 and 987.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,373.60 : 3,561.48 = 987.96 : x
2. Step 2: Convert to fraction form
   2,373.60/3,561.48 = 987.96/x
3. Step 3: Cross multiply
   2,373.60x = 3,561.48 × 987.96
4. Step 4: Simplify right side
   2,373.60x = 3,518,599.78
5. Step 5: Solve for x
   x = 3,518,599.78/2,373.60
6. Step 6: Final answer
   x = 1,482.39