Finding the Fourth Proportional to 2,130.17, 2,939.56 and 1,185.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,130.17 : 2,939.56 = 1,185.93 : x
2. Step 2: Convert to fraction form
   2,130.17/2,939.56 = 1,185.93/x
3. Step 3: Cross multiply
   2,130.17x = 2,939.56 × 1,185.93
4. Step 4: Simplify right side
   2,130.17x = 3,486,112.39
5. Step 5: Solve for x
   x = 3,486,112.39/2,130.17
6. Step 6: Final answer
   x = 1,636.54