Finding the Fourth Proportional to 1,342.16, 1,852.08 and 818.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.16 : 1,852.08 = 818.12 : x
2. Step 2: Convert to fraction form
   1,342.16/1,852.08 = 818.12/x
3. Step 3: Cross multiply
   1,342.16x = 1,852.08 × 818.12
4. Step 4: Simplify right side
   1,342.16x = 1,515,223.69
5. Step 5: Solve for x
   x = 1,515,223.69/1,342.16
6. Step 6: Final answer
   x = 1,128.94