Finding the Fourth Proportional to 1,426,341.39, 2,139,610.52 and 415,471.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426,341.39 : 2,139,610.52 = 415,471.74 : x
2. Step 2: Convert to fraction form
   1,426,341.39/2,139,610.52 = 415,471.74/x
3. Step 3: Cross multiply
   1,426,341.39x = 2,139,610.52 × 415,471.74
4. Step 4: Simplify right side
   1,426,341.39x = 888,947,705,666.71
5. Step 5: Solve for x
   x = 888,947,705,666.71/1,426,341.39
6. Step 6: Final answer
   x = 623,236.28