Finding the Fourth Proportional to 2,142.18, 2,955.29 and 1,433.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.18 : 2,955.29 = 1,433.30 : x
2. Step 2: Convert to fraction form
   2,142.18/2,955.29 = 1,433.30/x
3. Step 3: Cross multiply
   2,142.18x = 2,955.29 × 1,433.30
4. Step 4: Simplify right side
   2,142.18x = 4,235,795.21
5. Step 5: Solve for x
   x = 4,235,795.21/2,142.18
6. Step 6: Final answer
   x = 1,977.33