Finding the Fourth Proportional to 1,488.16, 2,053.61 and 898.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.16 : 2,053.61 = 898.59 : x
2. Step 2: Convert to fraction form
   1,488.16/2,053.61 = 898.59/x
3. Step 3: Cross multiply
   1,488.16x = 2,053.61 × 898.59
4. Step 4: Simplify right side
   1,488.16x = 1,845,352.29
5. Step 5: Solve for x
   x = 1,845,352.29/1,488.16
6. Step 6: Final answer
   x = 1,240.02