Finding the Fourth Proportional to 1,768.87, 2,654.72 and 1,039.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,768.87 : 2,654.72 = 1,039.06 : x
2. Step 2: Convert to fraction form
   1,768.87/2,654.72 = 1,039.06/x
3. Step 3: Cross multiply
   1,768.87x = 2,654.72 × 1,039.06
4. Step 4: Simplify right side
   1,768.87x = 2,758,394.89
5. Step 5: Solve for x
   x = 2,758,394.89/1,768.87
6. Step 6: Final answer
   x = 1,559.42