Finding the Fourth Proportional to 2,132,397.72, 3,198,764.88 and 712,458.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,132,397.72 : 3,198,764.88 = 712,458.72 : x
2. Step 2: Convert to fraction form
   2,132,397.72/3,198,764.88 = 712,458.72/x
3. Step 3: Cross multiply
   2,132,397.72x = 3,198,764.88 × 712,458.72
4. Step 4: Simplify right side
   2,132,397.72x = 2,278,987,931,985.75
5. Step 5: Solve for x
   x = 2,278,987,931,985.75/2,132,397.72
6. Step 6: Final answer
   x = 1,068,744.31