Finding the Fourth Proportional to 2,139,022.95, 3,209,059.31 and 622,719.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139,022.95 : 3,209,059.31 = 622,719.47 : x
2. Step 2: Convert to fraction form
   2,139,022.95/3,209,059.31 = 622,719.47/x
3. Step 3: Cross multiply
   2,139,022.95x = 3,209,059.31 × 622,719.47
4. Step 4: Simplify right side
   2,139,022.95x = 1,998,343,693,562.87
5. Step 5: Solve for x
   x = 1,998,343,693,562.87/2,139,022.95
6. Step 6: Final answer
   x = 934,232.00