Finding the Fourth Proportional to 2,778,698.72, 4,167,464.88 and 783,688.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,778,698.72 : 4,167,464.88 = 783,688.16 : x
2. Step 2: Convert to fraction form
   2,778,698.72/4,167,464.88 = 783,688.16/x
3. Step 3: Cross multiply
   2,778,698.72x = 4,167,464.88 × 783,688.16
4. Step 4: Simplify right side
   2,778,698.72x = 3,265,992,869,334.72
5. Step 5: Solve for x
   x = 3,265,992,869,334.72/2,778,698.72
6. Step 6: Final answer
   x = 1,175,367.75