Finding the Fourth Proportional to 1,601.79, 2,403.17 and 871.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,601.79 : 2,403.17 = 871.98 : x
2. Step 2: Convert to fraction form
   1,601.79/2,403.17 = 871.98/x
3. Step 3: Cross multiply
   1,601.79x = 2,403.17 × 871.98
4. Step 4: Simplify right side
   1,601.79x = 2,095,511.82
5. Step 5: Solve for x
   x = 2,095,511.82/1,601.79
6. Step 6: Final answer
   x = 1,308.23