Finding the Fourth Proportional to 2,101,561.47, 3,151,214.69 and 661,976.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101,561.47 : 3,151,214.69 = 661,976.01 : x
2. Step 2: Convert to fraction form
   2,101,561.47/3,151,214.69 = 661,976.01/x
3. Step 3: Cross multiply
   2,101,561.47x = 3,151,214.69 × 661,976.01
4. Step 4: Simplify right side
   2,101,561.47x = 2,086,028,523,829.71
5. Step 5: Solve for x
   x = 2,086,028,523,829.71/2,101,561.47
6. Step 6: Final answer
   x = 992,608.85