Finding the Fourth Proportional to 1,247,816.55, 1,721,986.83 and 674,856.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,247,816.55 : 1,721,986.83 = 674,856.72 : x
2. Step 2: Convert to fraction form
   1,247,816.55/1,721,986.83 = 674,856.72/x
3. Step 3: Cross multiply
   1,247,816.55x = 1,721,986.83 × 674,856.72
4. Step 4: Simplify right side
   1,247,816.55x = 1,162,094,383,977.00
5. Step 5: Solve for x
   x = 1,162,094,383,977.00/1,247,816.55
6. Step 6: Final answer
   x = 931,302.27