Finding the Fourth Proportional to 1,342.02, 1,852.30 and 818.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.02 : 1,852.30 = 818.40 : x
2. Step 2: Convert to fraction form
   1,342.02/1,852.30 = 818.40/x
3. Step 3: Cross multiply
   1,342.02x = 1,852.30 × 818.40
4. Step 4: Simplify right side
   1,342.02x = 1,515,922.32
5. Step 5: Solve for x
   x = 1,515,922.32/1,342.02
6. Step 6: Final answer
   x = 1,129.58