Finding the Fourth Proportional to 2,479.88, 3,720.42 and 748.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,479.88 : 3,720.42 = 748.50 : x
2. Step 2: Convert to fraction form
   2,479.88/3,720.42 = 748.50/x
3. Step 3: Cross multiply
   2,479.88x = 3,720.42 × 748.50
4. Step 4: Simplify right side
   2,479.88x = 2,784,734.37
5. Step 5: Solve for x
   x = 2,784,734.37/2,479.88
6. Step 6: Final answer
   x = 1,122.93