Finding the Fourth Proportional to 885,443.19, 1,221,905.89 and 503,469.93

Step by Step Solution

1. Step 1: Write the proportion equation
   885,443.19 : 1,221,905.89 = 503,469.93 : x
2. Step 2: Convert to fraction form
   885,443.19/1,221,905.89 = 503,469.93/x
3. Step 3: Cross multiply
   885,443.19x = 1,221,905.89 × 503,469.93
4. Step 4: Simplify right side
   885,443.19x = 615,192,872,904.89
5. Step 5: Solve for x
   x = 615,192,872,904.89/885,443.19
6. Step 6: Final answer
   x = 694,785.26