Finding the Fourth Proportional to 2,135.59, 2,947.03 and 1,191.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,135.59 : 2,947.03 = 1,191.42 : x
2. Step 2: Convert to fraction form
   2,135.59/2,947.03 = 1,191.42/x
3. Step 3: Cross multiply
   2,135.59x = 2,947.03 × 1,191.42
4. Step 4: Simplify right side
   2,135.59x = 3,511,158.35
5. Step 5: Solve for x
   x = 3,511,158.35/2,135.59
6. Step 6: Final answer
   x = 1,644.12