Finding the Fourth Proportional to 1,488.40, 2,054.01 and 898.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.40 : 2,054.01 = 898.82 : x
2. Step 2: Convert to fraction form
   1,488.40/2,054.01 = 898.82/x
3. Step 3: Cross multiply
   1,488.40x = 2,054.01 × 898.82
4. Step 4: Simplify right side
   1,488.40x = 1,846,185.27
5. Step 5: Solve for x
   x = 1,846,185.27/1,488.40
6. Step 6: Final answer
   x = 1,240.38