Finding the Fourth Proportional to 2,142,940.56, 3,214,901.77 and 928,721.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142,940.56 : 3,214,901.77 = 928,721.00 : x
2. Step 2: Convert to fraction form
   2,142,940.56/3,214,901.77 = 928,721.00/x
3. Step 3: Cross multiply
   2,142,940.56x = 3,214,901.77 × 928,721.00
4. Step 4: Simplify right side
   2,142,940.56x = 2,985,746,768,339.86
5. Step 5: Solve for x
   x = 2,985,746,768,339.86/2,142,940.56
6. Step 6: Final answer
   x = 1,393,294.25