Finding the Fourth Proportional to 1,057,026.72, 1,458,086.84 and 674,622.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,057,026.72 : 1,458,086.84 = 674,622.48 : x
2. Step 2: Convert to fraction form
   1,057,026.72/1,458,086.84 = 674,622.48/x
3. Step 3: Cross multiply
   1,057,026.72x = 1,458,086.84 × 674,622.48
4. Step 4: Simplify right side
   1,057,026.72x = 983,658,160,056.16
5. Step 5: Solve for x
   x = 983,658,160,056.16/1,057,026.72
6. Step 6: Final answer
   x = 930,589.68