Finding the Fourth Proportional to 2,333.79, 3,498.42 and 872.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,333.79 : 3,498.42 = 872.55 : x
2. Step 2: Convert to fraction form
   2,333.79/3,498.42 = 872.55/x
3. Step 3: Cross multiply
   2,333.79x = 3,498.42 × 872.55
4. Step 4: Simplify right side
   2,333.79x = 3,052,546.37
5. Step 5: Solve for x
   x = 3,052,546.37/2,333.79
6. Step 6: Final answer
   x = 1,307.98