Finding the Fourth Proportional to 2,129.42, 2,938.50 and 1,184.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,129.42 : 2,938.50 = 1,184.78 : x
2. Step 2: Convert to fraction form
   2,129.42/2,938.50 = 1,184.78/x
3. Step 3: Cross multiply
   2,129.42x = 2,938.50 × 1,184.78
4. Step 4: Simplify right side
   2,129.42x = 3,481,483.38
5. Step 5: Solve for x
   x = 3,481,483.38/2,129.42
6. Step 6: Final answer
   x = 1,634.95