Finding the Fourth Proportional to 2,128.86, 2,937.78 and 1,184.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.86 : 2,937.78 = 1,184.61 : x
2. Step 2: Convert to fraction form
   2,128.86/2,937.78 = 1,184.61/x
3. Step 3: Cross multiply
   2,128.86x = 2,937.78 × 1,184.61
4. Step 4: Simplify right side
   2,128.86x = 3,480,123.57
5. Step 5: Solve for x
   x = 3,480,123.57/2,128.86
6. Step 6: Final answer
   x = 1,634.74