Finding the Fourth Proportional to 1,854.72, 2,558.61 and 1,145.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,854.72 : 2,558.61 = 1,145.97 : x
2. Step 2: Convert to fraction form
   1,854.72/2,558.61 = 1,145.97/x
3. Step 3: Cross multiply
   1,854.72x = 2,558.61 × 1,145.97
4. Step 4: Simplify right side
   1,854.72x = 2,932,090.30
5. Step 5: Solve for x
   x = 2,932,090.30/1,854.72
6. Step 6: Final answer
   x = 1,580.88