Finding the Fourth Proportional to 2,191.61, 3,024.47 and 1,196.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.61 : 3,024.47 = 1,196.90 : x
2. Step 2: Convert to fraction form
   2,191.61/3,024.47 = 1,196.90/x
3. Step 3: Cross multiply
   2,191.61x = 3,024.47 × 1,196.90
4. Step 4: Simplify right side
   2,191.61x = 3,619,967.04
5. Step 5: Solve for x
   x = 3,619,967.04/2,191.61
6. Step 6: Final answer
   x = 1,651.74