Finding the Fourth Proportional to 1,366.34, 1,885.71 and 842.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,366.34 : 1,885.71 = 842.38 : x
2. Step 2: Convert to fraction form
   1,366.34/1,885.71 = 842.38/x
3. Step 3: Cross multiply
   1,366.34x = 1,885.71 × 842.38
4. Step 4: Simplify right side
   1,366.34x = 1,588,484.39
5. Step 5: Solve for x
   x = 1,588,484.39/1,366.34
6. Step 6: Final answer
   x = 1,162.58