Finding the Fourth Proportional to 1,608.30, 2,407.86 and 1,053.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,608.30 : 2,407.86 = 1,053.72 : x
2. Step 2: Convert to fraction form
   1,608.30/2,407.86 = 1,053.72/x
3. Step 3: Cross multiply
   1,608.30x = 2,407.86 × 1,053.72
4. Step 4: Simplify right side
   1,608.30x = 2,537,210.24
5. Step 5: Solve for x
   x = 2,537,210.24/1,608.30
6. Step 6: Final answer
   x = 1,577.57