Finding the Fourth Proportional to 2,131.39, 2,941.29 and 1,199.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.39 : 2,941.29 = 1,199.89 : x
2. Step 2: Convert to fraction form
   2,131.39/2,941.29 = 1,199.89/x
3. Step 3: Cross multiply
   2,131.39x = 2,941.29 × 1,199.89
4. Step 4: Simplify right side
   2,131.39x = 3,529,224.46
5. Step 5: Solve for x
   x = 3,529,224.46/2,131.39
6. Step 6: Final answer
   x = 1,655.83