Finding the Fourth Proportional to 803,834.82, 1,205,498.18 and 264,002.15

Step by Step Solution

1. Step 1: Write the proportion equation
   803,834.82 : 1,205,498.18 = 264,002.15 : x
2. Step 2: Convert to fraction form
   803,834.82/1,205,498.18 = 264,002.15/x
3. Step 3: Cross multiply
   803,834.82x = 1,205,498.18 × 264,002.15
4. Step 4: Simplify right side
   803,834.82x = 318,254,117,605.15
5. Step 5: Solve for x
   x = 318,254,117,605.15/803,834.82
6. Step 6: Final answer
   x = 395,919.80