Finding the Fourth Proportional to 2,499.20, 3,746.40 and 1,943.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.20 : 3,746.40 = 1,943.60 : x
2. Step 2: Convert to fraction form
   2,499.20/3,746.40 = 1,943.60/x
3. Step 3: Cross multiply
   2,499.20x = 3,746.40 × 1,943.60
4. Step 4: Simplify right side
   2,499.20x = 7,281,503.04
5. Step 5: Solve for x
   x = 7,281,503.04/2,499.20
6. Step 6: Final answer
   x = 2,913.53