Finding the Fourth Proportional to 2,142.18, 2,953.65 and 1,788.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.18 : 2,953.65 = 1,788.61 : x
2. Step 2: Convert to fraction form
   2,142.18/2,953.65 = 1,788.61/x
3. Step 3: Cross multiply
   2,142.18x = 2,953.65 × 1,788.61
4. Step 4: Simplify right side
   2,142.18x = 5,282,927.93
5. Step 5: Solve for x
   x = 5,282,927.93/2,142.18
6. Step 6: Final answer
   x = 2,466.15