Finding the Fourth Proportional to 1,736.62, 2,603.10 and 1,078.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,736.62 : 2,603.10 = 1,078.50 : x
2. Step 2: Convert to fraction form
   1,736.62/2,603.10 = 1,078.50/x
3. Step 3: Cross multiply
   1,736.62x = 2,603.10 × 1,078.50
4. Step 4: Simplify right side
   1,736.62x = 2,807,443.35
5. Step 5: Solve for x
   x = 2,807,443.35/1,736.62
6. Step 6: Final answer
   x = 1,616.61