Finding the Fourth Proportional to 1,061.08, 1,590.63 and 574.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.08 : 1,590.63 = 574.18 : x
2. Step 2: Convert to fraction form
   1,061.08/1,590.63 = 574.18/x
3. Step 3: Cross multiply
   1,061.08x = 1,590.63 × 574.18
4. Step 4: Simplify right side
   1,061.08x = 913,307.93
5. Step 5: Solve for x
   x = 913,307.93/1,061.08
6. Step 6: Final answer
   x = 860.73