Finding the Fourth Proportional to 2,239,132.42, 3,089,886.15 and 1,272,128.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,239,132.42 : 3,089,886.15 = 1,272,128.50 : x
2. Step 2: Convert to fraction form
   2,239,132.42/3,089,886.15 = 1,272,128.50/x
3. Step 3: Cross multiply
   2,239,132.42x = 3,089,886.15 × 1,272,128.50
4. Step 4: Simplify right side
   2,239,132.42x = 3,930,732,233,170.28
5. Step 5: Solve for x
   x = 3,930,732,233,170.28/2,239,132.42
6. Step 6: Final answer
   x = 1,755,471.09