Finding the Fourth Proportional to 2,142.96, 2,950.38 and 1,866.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.96 : 2,950.38 = 1,866.84 : x
2. Step 2: Convert to fraction form
   2,142.96/2,950.38 = 1,866.84/x
3. Step 3: Cross multiply
   2,142.96x = 2,950.38 × 1,866.84
4. Step 4: Simplify right side
   2,142.96x = 5,507,887.40
5. Step 5: Solve for x
   x = 5,507,887.40/2,142.96
6. Step 6: Final answer
   x = 2,570.22