Finding the Fourth Proportional to 1,603.09, 2,401.52 and 1,053.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,603.09 : 2,401.52 = 1,053.61 : x
2. Step 2: Convert to fraction form
   1,603.09/2,401.52 = 1,053.61/x
3. Step 3: Cross multiply
   1,603.09x = 2,401.52 × 1,053.61
4. Step 4: Simplify right side
   1,603.09x = 2,530,256.11
5. Step 5: Solve for x
   x = 2,530,256.11/1,603.09
6. Step 6: Final answer
   x = 1,578.36