Finding the Fourth Proportional to 2,118.05, 2,920.86 and 1,488.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118.05 : 2,920.86 = 1,488.38 : x
2. Step 2: Convert to fraction form
   2,118.05/2,920.86 = 1,488.38/x
3. Step 3: Cross multiply
   2,118.05x = 2,920.86 × 1,488.38
4. Step 4: Simplify right side
   2,118.05x = 4,347,335.00
5. Step 5: Solve for x
   x = 4,347,335.00/2,118.05
6. Step 6: Final answer
   x = 2,052.52