Finding the Fourth Proportional to 1,736.78, 2,603.70 and 697.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,736.78 : 2,603.70 = 697.52 : x
2. Step 2: Convert to fraction form
   1,736.78/2,603.70 = 697.52/x
3. Step 3: Cross multiply
   1,736.78x = 2,603.70 × 697.52
4. Step 4: Simplify right side
   1,736.78x = 1,816,132.82
5. Step 5: Solve for x
   x = 1,816,132.82/1,736.78
6. Step 6: Final answer
   x = 1,045.69