Finding the Fourth Proportional to 1,657.76, 2,472.01 and 1,642.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,657.76 : 2,472.01 = 1,642.95 : x
2. Step 2: Convert to fraction form
   1,657.76/2,472.01 = 1,642.95/x
3. Step 3: Cross multiply
   1,657.76x = 2,472.01 × 1,642.95
4. Step 4: Simplify right side
   1,657.76x = 4,061,384.72
5. Step 5: Solve for x
   x = 4,061,384.72/1,657.76
6. Step 6: Final answer
   x = 2,449.93