Finding the Fourth Proportional to 1,488.61, 2,053.74 and 898.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.61 : 2,053.74 = 898.93 : x
2. Step 2: Convert to fraction form
   1,488.61/2,053.74 = 898.93/x
3. Step 3: Cross multiply
   1,488.61x = 2,053.74 × 898.93
4. Step 4: Simplify right side
   1,488.61x = 1,846,166.73
5. Step 5: Solve for x
   x = 1,846,166.73/1,488.61
6. Step 6: Final answer
   x = 1,240.20