Finding the Fourth Proportional to 2,220.89, 3,061.14 and 1,590.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,220.89 : 3,061.14 = 1,590.42 : x
2. Step 2: Convert to fraction form
   2,220.89/3,061.14 = 1,590.42/x
3. Step 3: Cross multiply
   2,220.89x = 3,061.14 × 1,590.42
4. Step 4: Simplify right side
   2,220.89x = 4,868,498.28
5. Step 5: Solve for x
   x = 4,868,498.28/2,220.89
6. Step 6: Final answer
   x = 2,192.14