Finding the Fourth Proportional to 2,499.60, 3,450.43 and 1,648.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.60 : 3,450.43 = 1,648.72 : x
2. Step 2: Convert to fraction form
   2,499.60/3,450.43 = 1,648.72/x
3. Step 3: Cross multiply
   2,499.60x = 3,450.43 × 1,648.72
4. Step 4: Simplify right side
   2,499.60x = 5,688,792.95
5. Step 5: Solve for x
   x = 5,688,792.95/2,499.60
6. Step 6: Final answer
   x = 2,275.88