Finding the Fourth Proportional to 1,488.13, 2,230.59 and 1,411.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.13 : 2,230.59 = 1,411.22 : x
2. Step 2: Convert to fraction form
   1,488.13/2,230.59 = 1,411.22/x
3. Step 3: Cross multiply
   1,488.13x = 2,230.59 × 1,411.22
4. Step 4: Simplify right side
   1,488.13x = 3,147,853.22
5. Step 5: Solve for x
   x = 3,147,853.22/1,488.13
6. Step 6: Final answer
   x = 2,115.31