Finding the Fourth Proportional to 1,488.46, 2,237.76 and 1,216.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.46 : 2,237.76 = 1,216.52 : x
2. Step 2: Convert to fraction form
   1,488.46/2,237.76 = 1,216.52/x
3. Step 3: Cross multiply
   1,488.46x = 2,237.76 × 1,216.52
4. Step 4: Simplify right side
   1,488.46x = 2,722,279.80
5. Step 5: Solve for x
   x = 2,722,279.80/1,488.46
6. Step 6: Final answer
   x = 1,828.92