Finding the Fourth Proportional to 2,478,215.50, 3,419,996.34 and 1,390,567.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,478,215.50 : 3,419,996.34 = 1,390,567.54 : x
2. Step 2: Convert to fraction form
   2,478,215.50/3,419,996.34 = 1,390,567.54/x
3. Step 3: Cross multiply
   2,478,215.50x = 3,419,996.34 × 1,390,567.54
4. Step 4: Simplify right side
   2,478,215.50x = 4,755,735,897,322.80
5. Step 5: Solve for x
   x = 4,755,735,897,322.80/2,478,215.50
6. Step 6: Final answer
   x = 1,919,016.28