Finding the Fourth Proportional to 1,832.78, 2,528.88 and 1,086.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,832.78 : 2,528.88 = 1,086.60 : x
2. Step 2: Convert to fraction form
   1,832.78/2,528.88 = 1,086.60/x
3. Step 3: Cross multiply
   1,832.78x = 2,528.88 × 1,086.60
4. Step 4: Simplify right side
   1,832.78x = 2,747,881.01
5. Step 5: Solve for x
   x = 2,747,881.01/1,832.78
6. Step 6: Final answer
   x = 1,499.30