Finding the Fourth Proportional to 2,100,849.42, 3,151,385.88 and 661,645.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100,849.42 : 3,151,385.88 = 661,645.38 : x
2. Step 2: Convert to fraction form
   2,100,849.42/3,151,385.88 = 661,645.38/x
3. Step 3: Cross multiply
   2,100,849.42x = 3,151,385.88 × 661,645.38
4. Step 4: Simplify right side
   2,100,849.42x = 2,085,099,894,648.89
5. Step 5: Solve for x
   x = 2,085,099,894,648.89/2,100,849.42
6. Step 6: Final answer
   x = 992,503.26