Finding the Fourth Proportional to 1,427,112.50, 2,140,557.05 and 402,401.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427,112.50 : 2,140,557.05 = 402,401.39 : x
2. Step 2: Convert to fraction form
   1,427,112.50/2,140,557.05 = 402,401.39/x
3. Step 3: Cross multiply
   1,427,112.50x = 2,140,557.05 × 402,401.39
4. Step 4: Simplify right side
   1,427,112.50x = 861,363,122,597.52
5. Step 5: Solve for x
   x = 861,363,122,597.52/1,427,112.50
6. Step 6: Final answer
   x = 603,570.58