Finding the Fourth Proportional to 1,580.91, 2,180.71 and 1,162.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,580.91 : 2,180.71 = 1,162.35 : x
2. Step 2: Convert to fraction form
   1,580.91/2,180.71 = 1,162.35/x
3. Step 3: Cross multiply
   1,580.91x = 2,180.71 × 1,162.35
4. Step 4: Simplify right side
   1,580.91x = 2,534,731.55
5. Step 5: Solve for x
   x = 2,534,731.55/1,580.91
6. Step 6: Final answer
   x = 1,603.34