Finding the Fourth Proportional to 1,396.42, 1,927.46 and 1,118.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,396.42 : 1,927.46 = 1,118.59 : x
2. Step 2: Convert to fraction form
   1,396.42/1,927.46 = 1,118.59/x
3. Step 3: Cross multiply
   1,396.42x = 1,927.46 × 1,118.59
4. Step 4: Simplify right side
   1,396.42x = 2,156,037.48
5. Step 5: Solve for x
   x = 2,156,037.48/1,396.42
6. Step 6: Final answer
   x = 1,543.97