Finding the Fourth Proportional to 1,601.97, 2,401.53 and 872.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,601.97 : 2,401.53 = 872.16 : x
2. Step 2: Convert to fraction form
   1,601.97/2,401.53 = 872.16/x
3. Step 3: Cross multiply
   1,601.97x = 2,401.53 × 872.16
4. Step 4: Simplify right side
   1,601.97x = 2,094,518.40
5. Step 5: Solve for x
   x = 2,094,518.40/1,601.97
6. Step 6: Final answer
   x = 1,307.46