Finding the Fourth Proportional to 826,651.98, 1,140,643.89 and 487,074.06

Step by Step Solution

1. Step 1: Write the proportion equation
   826,651.98 : 1,140,643.89 = 487,074.06 : x
2. Step 2: Convert to fraction form
   826,651.98/1,140,643.89 = 487,074.06/x
3. Step 3: Cross multiply
   826,651.98x = 1,140,643.89 × 487,074.06
4. Step 4: Simplify right side
   826,651.98x = 555,578,050,516.49
5. Step 5: Solve for x
   x = 555,578,050,516.49/826,651.98
6. Step 6: Final answer
   x = 672,082.16