Finding the Fourth Proportional to 3,131,172.15, 4,697,493.27 and 972,086.99

Step by Step Solution

1. Step 1: Write the proportion equation
   3,131,172.15 : 4,697,493.27 = 972,086.99 : x
2. Step 2: Convert to fraction form
   3,131,172.15/4,697,493.27 = 972,086.99/x
3. Step 3: Cross multiply
   3,131,172.15x = 4,697,493.27 × 972,086.99
4. Step 4: Simplify right side
   3,131,172.15x = 4,566,372,072,510.83
5. Step 5: Solve for x
   x = 4,566,372,072,510.83/3,131,172.15
6. Step 6: Final answer
   x = 1,458,358.68