Finding the Fourth Proportional to 2,039.30, 3,056.16 and 1,488.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,039.30 : 3,056.16 = 1,488.91 : x
2. Step 2: Convert to fraction form
   2,039.30/3,056.16 = 1,488.91/x
3. Step 3: Cross multiply
   2,039.30x = 3,056.16 × 1,488.91
4. Step 4: Simplify right side
   2,039.30x = 4,550,347.19
5. Step 5: Solve for x
   x = 4,550,347.19/2,039.30
6. Step 6: Final answer
   x = 2,231.33