Finding the Fourth Proportional to 2,188,407.18, 3,020,505.78 and 1,283,280.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188,407.18 : 3,020,505.78 = 1,283,280.78 : x
2. Step 2: Convert to fraction form
   2,188,407.18/3,020,505.78 = 1,283,280.78/x
3. Step 3: Cross multiply
   2,188,407.18x = 3,020,505.78 × 1,283,280.78
4. Step 4: Simplify right side
   2,188,407.18x = 3,876,157,013,352.91
5. Step 5: Solve for x
   x = 3,876,157,013,352.91/2,188,407.18
6. Step 6: Final answer
   x = 1,771,222.95