Finding the Fourth Proportional to 2,139,280.22, 3,208,242.45 and 699,630.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139,280.22 : 3,208,242.45 = 699,630.95 : x
2. Step 2: Convert to fraction form
   2,139,280.22/3,208,242.45 = 699,630.95/x
3. Step 3: Cross multiply
   2,139,280.22x = 3,208,242.45 × 699,630.95
4. Step 4: Simplify right side
   2,139,280.22x = 2,244,585,713,123.83
5. Step 5: Solve for x
   x = 2,244,585,713,123.83/2,139,280.22
6. Step 6: Final answer
   x = 1,049,224.73