Finding the Fourth Proportional to 1,368.30, 1,887.70 and 843.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,368.30 : 1,887.70 = 843.42 : x
2. Step 2: Convert to fraction form
   1,368.30/1,887.70 = 843.42/x
3. Step 3: Cross multiply
   1,368.30x = 1,887.70 × 843.42
4. Step 4: Simplify right side
   1,368.30x = 1,592,123.93
5. Step 5: Solve for x
   x = 1,592,123.93/1,368.30
6. Step 6: Final answer
   x = 1,163.58