Finding the Fourth Proportional to 1,196.56, 1,791.42 and 1,059.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.56 : 1,791.42 = 1,059.40 : x
2. Step 2: Convert to fraction form
   1,196.56/1,791.42 = 1,059.40/x
3. Step 3: Cross multiply
   1,196.56x = 1,791.42 × 1,059.40
4. Step 4: Simplify right side
   1,196.56x = 1,897,830.35
5. Step 5: Solve for x
   x = 1,897,830.35/1,196.56
6. Step 6: Final answer
   x = 1,586.07