Finding the Fourth Proportional to 885,003.42, 1,221,302.04 and 503,103.78

Step by Step Solution

1. Step 1: Write the proportion equation
   885,003.42 : 1,221,302.04 = 503,103.78 : x
2. Step 2: Convert to fraction form
   885,003.42/1,221,302.04 = 503,103.78/x
3. Step 3: Cross multiply
   885,003.42x = 1,221,302.04 × 503,103.78
4. Step 4: Simplify right side
   885,003.42x = 614,441,672,845.71
5. Step 5: Solve for x
   x = 614,441,672,845.71/885,003.42
6. Step 6: Final answer
   x = 694,281.69