Finding the Fourth Proportional to 1,839.78, 2,538.54 and 1,176.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,839.78 : 2,538.54 = 1,176.12 : x
2. Step 2: Convert to fraction form
   1,839.78/2,538.54 = 1,176.12/x
3. Step 3: Cross multiply
   1,839.78x = 2,538.54 × 1,176.12
4. Step 4: Simplify right side
   1,839.78x = 2,985,627.66
5. Step 5: Solve for x
   x = 2,985,627.66/1,839.78
6. Step 6: Final answer
   x = 1,622.82