Finding the Fourth Proportional to 2,238,012.87, 3,357,674.38 and 721,665.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238,012.87 : 3,357,674.38 = 721,665.30 : x
2. Step 2: Convert to fraction form
   2,238,012.87/3,357,674.38 = 721,665.30/x
3. Step 3: Cross multiply
   2,238,012.87x = 3,357,674.38 × 721,665.30
4. Step 4: Simplify right side
   2,238,012.87x = 2,423,117,088,745.01
5. Step 5: Solve for x
   x = 2,423,117,088,745.01/2,238,012.87
6. Step 6: Final answer
   x = 1,082,709.18