Finding the Fourth Proportional to 2,139,165.78, 3,208,071.37 and 699,516.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139,165.78 : 3,208,071.37 = 699,516.60 : x
2. Step 2: Convert to fraction form
   2,139,165.78/3,208,071.37 = 699,516.60/x
3. Step 3: Cross multiply
   2,139,165.78x = 3,208,071.37 × 699,516.60
4. Step 4: Simplify right side
   2,139,165.78x = 2,244,099,157,761.80
5. Step 5: Solve for x
   x = 2,244,099,157,761.80/2,139,165.78
6. Step 6: Final answer
   x = 1,049,053.41