Finding the Fourth Proportional to 2,907,978.75, 4,359,948.19 and 1,287,864.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,907,978.75 : 4,359,948.19 = 1,287,864.74 : x
2. Step 2: Convert to fraction form
   2,907,978.75/4,359,948.19 = 1,287,864.74/x
3. Step 3: Cross multiply
   2,907,978.75x = 4,359,948.19 × 1,287,864.74
4. Step 4: Simplify right side
   2,907,978.75x = 5,615,023,549,808.03
5. Step 5: Solve for x
   x = 5,615,023,549,808.03/2,907,978.75
6. Step 6: Final answer
   x = 1,930,902.54