Finding the Fourth Proportional to 1,367.91, 1,886.45 and 1,158.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,367.91 : 1,886.45 = 1,158.53 : x
2. Step 2: Convert to fraction form
   1,367.91/1,886.45 = 1,158.53/x
3. Step 3: Cross multiply
   1,367.91x = 1,886.45 × 1,158.53
4. Step 4: Simplify right side
   1,367.91x = 2,185,502.38
5. Step 5: Solve for x
   x = 2,185,502.38/1,367.91
6. Step 6: Final answer
   x = 1,597.69