Finding the Fourth Proportional to 2,217,128.67, 3,059,636.36 and 1,198,535.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,217,128.67 : 3,059,636.36 = 1,198,535.31 : x
2. Step 2: Convert to fraction form
   2,217,128.67/3,059,636.36 = 1,198,535.31/x
3. Step 3: Cross multiply
   2,217,128.67x = 3,059,636.36 × 1,198,535.31
4. Step 4: Simplify right side
   2,217,128.67x = 3,667,082,207,227.20
5. Step 5: Solve for x
   x = 3,667,082,207,227.20/2,217,128.67
6. Step 6: Final answer
   x = 1,653,978.07