Finding the Fourth Proportional to 2,131,253.20, 3,194,725.69 and 917,621.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131,253.20 : 3,194,725.69 = 917,621.46 : x
2. Step 2: Convert to fraction form
   2,131,253.20/3,194,725.69 = 917,621.46/x
3. Step 3: Cross multiply
   2,131,253.20x = 3,194,725.69 × 917,621.46
4. Step 4: Simplify right side
   2,131,253.20x = 2,931,548,851,168.61
5. Step 5: Solve for x
   x = 2,931,548,851,168.61/2,131,253.20
6. Step 6: Final answer
   x = 1,375,504.73