Finding the Fourth Proportional to 888,391, 1,226,008.83 and 485,983

Step by Step Solution

1. Step 1: Write the proportion equation
   888,391 : 1,226,008.83 = 485,983 : x
2. Step 2: Convert to fraction form
   888,391/1,226,008.83 = 485,983/x
3. Step 3: Cross multiply
   888,391x = 1,226,008.83 × 485,983
4. Step 4: Simplify right side
   888,391x = 595,819,449,229.89
5. Step 5: Solve for x
   x = 595,819,449,229.89/888,391
6. Step 6: Final answer
   x = 670,672.54