Finding the Fourth Proportional to 1,374.16, 1,895.48 and 842.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,374.16 : 1,895.48 = 842.76 : x
2. Step 2: Convert to fraction form
   1,374.16/1,895.48 = 842.76/x
3. Step 3: Cross multiply
   1,374.16x = 1,895.48 × 842.76
4. Step 4: Simplify right side
   1,374.16x = 1,597,434.72
5. Step 5: Solve for x
   x = 1,597,434.72/1,374.16
6. Step 6: Final answer
   x = 1,162.48