Finding the Fourth Proportional to 2,198,233.52, 3,296,969.60 and 661,206.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,198,233.52 : 3,296,969.60 = 661,206.72 : x
2. Step 2: Convert to fraction form
   2,198,233.52/3,296,969.60 = 661,206.72/x
3. Step 3: Cross multiply
   2,198,233.52x = 3,296,969.60 × 661,206.72
4. Step 4: Simplify right side
   2,198,233.52x = 2,179,978,455,155.71
5. Step 5: Solve for x
   x = 2,179,978,455,155.71/2,198,233.52
6. Step 6: Final answer
   x = 991,695.58