Finding the Fourth Proportional to 1,196.61, 1,783.17 and 1,157.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.61 : 1,783.17 = 1,157.46 : x
2. Step 2: Convert to fraction form
   1,196.61/1,783.17 = 1,157.46/x
3. Step 3: Cross multiply
   1,196.61x = 1,783.17 × 1,157.46
4. Step 4: Simplify right side
   1,196.61x = 2,063,947.95
5. Step 5: Solve for x
   x = 2,063,947.95/1,196.61
6. Step 6: Final answer
   x = 1,724.83