Finding the Fourth Proportional to 1,488.24, 2,230.74 and 1,120.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.24 : 2,230.74 = 1,120.50 : x
2. Step 2: Convert to fraction form
   1,488.24/2,230.74 = 1,120.50/x
3. Step 3: Cross multiply
   1,488.24x = 2,230.74 × 1,120.50
4. Step 4: Simplify right side
   1,488.24x = 2,499,544.17
5. Step 5: Solve for x
   x = 2,499,544.17/1,488.24
6. Step 6: Final answer
   x = 1,679.53