Finding the Fourth Proportional to 1,145.80, 1,581.06 and 948.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,145.80 : 1,581.06 = 948.52 : x
2. Step 2: Convert to fraction form
   1,145.80/1,581.06 = 948.52/x
3. Step 3: Cross multiply
   1,145.80x = 1,581.06 × 948.52
4. Step 4: Simplify right side
   1,145.80x = 1,499,667.03
5. Step 5: Solve for x
   x = 1,499,667.03/1,145.80
6. Step 6: Final answer
   x = 1,308.84