Finding the Fourth Proportional to 1,145.48, 1,580.25 and 673.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,145.48 : 1,580.25 = 673.52 : x
2. Step 2: Convert to fraction form
   1,145.48/1,580.25 = 673.52/x
3. Step 3: Cross multiply
   1,145.48x = 1,580.25 × 673.52
4. Step 4: Simplify right side
   1,145.48x = 1,064,322.08
5. Step 5: Solve for x
   x = 1,064,322.08/1,145.48
6. Step 6: Final answer
   x = 929.15