Finding the Fourth Proportional to 1,342.37, 1,852.46 and 818.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.37 : 1,852.46 = 818.40 : x
2. Step 2: Convert to fraction form
   1,342.37/1,852.46 = 818.40/x
3. Step 3: Cross multiply
   1,342.37x = 1,852.46 × 818.40
4. Step 4: Simplify right side
   1,342.37x = 1,516,059.19
5. Step 5: Solve for x
   x = 1,516,059.19/1,342.37
6. Step 6: Final answer
   x = 1,129.39