Finding the Fourth Proportional to 1,531.18, 2,300.91 and 801.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,531.18 : 2,300.91 = 801.30 : x
2. Step 2: Convert to fraction form
   1,531.18/2,300.91 = 801.30/x
3. Step 3: Cross multiply
   1,531.18x = 2,300.91 × 801.30
4. Step 4: Simplify right side
   1,531.18x = 1,843,719.18
5. Step 5: Solve for x
   x = 1,843,719.18/1,531.18
6. Step 6: Final answer
   x = 1,204.12