Finding the Fourth Proportional to 2,316.72, 3,470.20 and 1,691.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,316.72 : 3,470.20 = 1,691.61 : x
2. Step 2: Convert to fraction form
   2,316.72/3,470.20 = 1,691.61/x
3. Step 3: Cross multiply
   2,316.72x = 3,470.20 × 1,691.61
4. Step 4: Simplify right side
   2,316.72x = 5,870,225.02
5. Step 5: Solve for x
   x = 5,870,225.02/2,316.72
6. Step 6: Final answer
   x = 2,533.85