Finding the Fourth Proportional to 2,131.04, 2,940.71 and 1,186.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.04 : 2,940.71 = 1,186.74 : x
2. Step 2: Convert to fraction form
   2,131.04/2,940.71 = 1,186.74/x
3. Step 3: Cross multiply
   2,131.04x = 2,940.71 × 1,186.74
4. Step 4: Simplify right side
   2,131.04x = 3,489,852.25
5. Step 5: Solve for x
   x = 3,489,852.25/2,131.04
6. Step 6: Final answer
   x = 1,637.63