Finding the Fourth Proportional to 2,136.16, 2,947.82 and 1,191.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,136.16 : 2,947.82 = 1,191.93 : x
2. Step 2: Convert to fraction form
   2,136.16/2,947.82 = 1,191.93/x
3. Step 3: Cross multiply
   2,136.16x = 2,947.82 × 1,191.93
4. Step 4: Simplify right side
   2,136.16x = 3,513,589.13
5. Step 5: Solve for x
   x = 3,513,589.13/2,136.16
6. Step 6: Final answer
   x = 1,644.82