Finding the Fourth Proportional to 1,150.30, 1,585.61 and 1,054.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.30 : 1,585.61 = 1,054.96 : x
2. Step 2: Convert to fraction form
   1,150.30/1,585.61 = 1,054.96/x
3. Step 3: Cross multiply
   1,150.30x = 1,585.61 × 1,054.96
4. Step 4: Simplify right side
   1,150.30x = 1,672,760.98
5. Step 5: Solve for x
   x = 1,672,760.98/1,150.30
6. Step 6: Final answer
   x = 1,454.19