Finding the Fourth Proportional to 1,488.50, 2,050.89 and 1,045.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.50 : 2,050.89 = 1,045.16 : x
2. Step 2: Convert to fraction form
   1,488.50/2,050.89 = 1,045.16/x
3. Step 3: Cross multiply
   1,488.50x = 2,050.89 × 1,045.16
4. Step 4: Simplify right side
   1,488.50x = 2,143,508.19
5. Step 5: Solve for x
   x = 2,143,508.19/1,488.50
6. Step 6: Final answer
   x = 1,440.05