Finding the Fourth Proportional to 1,488.02, 2,221.17 and 1,379.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.02 : 2,221.17 = 1,379.61 : x
2. Step 2: Convert to fraction form
   1,488.02/2,221.17 = 1,379.61/x
3. Step 3: Cross multiply
   1,488.02x = 2,221.17 × 1,379.61
4. Step 4: Simplify right side
   1,488.02x = 3,064,350.01
5. Step 5: Solve for x
   x = 3,064,350.01/1,488.02
6. Step 6: Final answer
   x = 2,059.35