Finding the Fourth Proportional to 1,657.91, 2,484.54 and 1,309.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,657.91 : 2,484.54 = 1,309.72 : x
2. Step 2: Convert to fraction form
   1,657.91/2,484.54 = 1,309.72/x
3. Step 3: Cross multiply
   1,657.91x = 2,484.54 × 1,309.72
4. Step 4: Simplify right side
   1,657.91x = 3,254,051.73
5. Step 5: Solve for x
   x = 3,254,051.73/1,657.91
6. Step 6: Final answer
   x = 1,962.74