Finding the Fourth Proportional to 2,128.61, 2,937.42 and 1,184.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.61 : 2,937.42 = 1,184.35 : x
2. Step 2: Convert to fraction form
   2,128.61/2,937.42 = 1,184.35/x
3. Step 3: Cross multiply
   2,128.61x = 2,937.42 × 1,184.35
4. Step 4: Simplify right side
   2,128.61x = 3,478,933.38
5. Step 5: Solve for x
   x = 3,478,933.38/2,128.61
6. Step 6: Final answer
   x = 1,634.37