Finding the Fourth Proportional to 2,454.72, 3,387.72 and 1,407.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,454.72 : 3,387.72 = 1,407.12 : x
2. Step 2: Convert to fraction form
   2,454.72/3,387.72 = 1,407.12/x
3. Step 3: Cross multiply
   2,454.72x = 3,387.72 × 1,407.12
4. Step 4: Simplify right side
   2,454.72x = 4,766,928.57
5. Step 5: Solve for x
   x = 4,766,928.57/2,454.72
6. Step 6: Final answer
   x = 1,941.94