Finding the Fourth Proportional to 1,151.07, 1,586.60 and 801.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,151.07 : 1,586.60 = 801.15 : x
2. Step 2: Convert to fraction form
   1,151.07/1,586.60 = 801.15/x
3. Step 3: Cross multiply
   1,151.07x = 1,586.60 × 801.15
4. Step 4: Simplify right side
   1,151.07x = 1,271,100.58
5. Step 5: Solve for x
   x = 1,271,100.58/1,151.07
6. Step 6: Final answer
   x = 1,104.28