Finding the Fourth Proportional to 3,391,978.50, 5,090,300.55 and 1,397,434.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,391,978.50 : 5,090,300.55 = 1,397,434.50 : x
2. Step 2: Convert to fraction form
   3,391,978.50/5,090,300.55 = 1,397,434.50/x
3. Step 3: Cross multiply
   3,391,978.50x = 5,090,300.55 × 1,397,434.50
4. Step 4: Simplify right side
   3,391,978.50x = 7,113,361,603,938.98
5. Step 5: Solve for x
   x = 7,113,361,603,938.98/3,391,978.50
6. Step 6: Final answer
   x = 2,097,112.82