Finding the Fourth Proportional to 2,499.86, 3,750.10 and 939.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.86 : 3,750.10 = 939.40 : x
2. Step 2: Convert to fraction form
   2,499.86/3,750.10 = 939.40/x
3. Step 3: Cross multiply
   2,499.86x = 3,750.10 × 939.40
4. Step 4: Simplify right side
   2,499.86x = 3,522,832.22
5. Step 5: Solve for x
   x = 3,522,832.22/2,499.86
6. Step 6: Final answer
   x = 1,409.21