Finding the Fourth Proportional to 1,563.42, 2,336.18 and 1,191.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,563.42 : 2,336.18 = 1,191.17 : x
2. Step 2: Convert to fraction form
   1,563.42/2,336.18 = 1,191.17/x
3. Step 3: Cross multiply
   1,563.42x = 2,336.18 × 1,191.17
4. Step 4: Simplify right side
   1,563.42x = 2,782,769.89
5. Step 5: Solve for x
   x = 2,782,769.89/1,563.42
6. Step 6: Final answer
   x = 1,779.92