Finding the Fourth Proportional to 2,431.89, 3,356.25 and 1,488.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,431.89 : 3,356.25 = 1,488.30 : x
2. Step 2: Convert to fraction form
   2,431.89/3,356.25 = 1,488.30/x
3. Step 3: Cross multiply
   2,431.89x = 3,356.25 × 1,488.30
4. Step 4: Simplify right side
   2,431.89x = 4,995,106.88
5. Step 5: Solve for x
   x = 4,995,106.88/2,431.89
6. Step 6: Final answer
   x = 2,054.00