Finding the Fourth Proportional to 2,485,885.39, 3,430,487.98 and 1,398,156.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485,885.39 : 3,430,487.98 = 1,398,156.53 : x
2. Step 2: Convert to fraction form
   2,485,885.39/3,430,487.98 = 1,398,156.53/x
3. Step 3: Cross multiply
   2,485,885.39x = 3,430,487.98 × 1,398,156.53
4. Step 4: Simplify right side
   2,485,885.39x = 4,796,359,175,404.34
5. Step 5: Solve for x
   x = 4,796,359,175,404.34/2,485,885.39
6. Step 6: Final answer
   x = 1,929,436.97