Finding the Fourth Proportional to 1,488.73, 2,054.31 and 899.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.73 : 2,054.31 = 899.47 : x
2. Step 2: Convert to fraction form
   1,488.73/2,054.31 = 899.47/x
3. Step 3: Cross multiply
   1,488.73x = 2,054.31 × 899.47
4. Step 4: Simplify right side
   1,488.73x = 1,847,790.22
5. Step 5: Solve for x
   x = 1,847,790.22/1,488.73
6. Step 6: Final answer
   x = 1,241.19