Finding the Fourth Proportional to 2,316.24, 3,475.20 and 1,146.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,316.24 : 3,475.20 = 1,146.72 : x
2. Step 2: Convert to fraction form
   2,316.24/3,475.20 = 1,146.72/x
3. Step 3: Cross multiply
   2,316.24x = 3,475.20 × 1,146.72
4. Step 4: Simplify right side
   2,316.24x = 3,985,081.34
5. Step 5: Solve for x
   x = 3,985,081.34/2,316.24
6. Step 6: Final answer
   x = 1,720.50