Finding the Fourth Proportional to 2,488.84, 3,435.78 and 1,440.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488.84 : 3,435.78 = 1,440.52 : x
2. Step 2: Convert to fraction form
   2,488.84/3,435.78 = 1,440.52/x
3. Step 3: Cross multiply
   2,488.84x = 3,435.78 × 1,440.52
4. Step 4: Simplify right side
   2,488.84x = 4,949,309.81
5. Step 5: Solve for x
   x = 4,949,309.81/2,488.84
6. Step 6: Final answer
   x = 1,988.60