Finding the Fourth Proportional to 2,478,532.69, 3,420,365.90 and 1,390,801.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,478,532.69 : 3,420,365.90 = 1,390,801.81 : x
2. Step 2: Convert to fraction form
   2,478,532.69/3,420,365.90 = 1,390,801.81/x
3. Step 3: Cross multiply
   2,478,532.69x = 3,420,365.90 × 1,390,801.81
4. Step 4: Simplify right side
   2,478,532.69x = 4,757,051,084,582.28
5. Step 5: Solve for x
   x = 4,757,051,084,582.28/2,478,532.69
6. Step 6: Final answer
   x = 1,919,301.33