Finding the Fourth Proportional to 2,131.22, 2,941.04 and 1,199.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.22 : 2,941.04 = 1,199.72 : x
2. Step 2: Convert to fraction form
   2,131.22/2,941.04 = 1,199.72/x
3. Step 3: Cross multiply
   2,131.22x = 2,941.04 × 1,199.72
4. Step 4: Simplify right side
   2,131.22x = 3,528,424.51
5. Step 5: Solve for x
   x = 3,528,424.51/2,131.22
6. Step 6: Final answer
   x = 1,655.59