Finding the Fourth Proportional to 2,186.51, 3,017.42 and 1,191.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,186.51 : 3,017.42 = 1,191.83 : x
2. Step 2: Convert to fraction form
   2,186.51/3,017.42 = 1,191.83/x
3. Step 3: Cross multiply
   2,186.51x = 3,017.42 × 1,191.83
4. Step 4: Simplify right side
   2,186.51x = 3,596,230.63
5. Step 5: Solve for x
   x = 3,596,230.63/2,186.51
6. Step 6: Final answer
   x = 1,644.74