Finding the Fourth Proportional to 2,335.37, 3,501.91 and 691.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,335.37 : 3,501.91 = 691.47 : x
2. Step 2: Convert to fraction form
   2,335.37/3,501.91 = 691.47/x
3. Step 3: Cross multiply
   2,335.37x = 3,501.91 × 691.47
4. Step 4: Simplify right side
   2,335.37x = 2,421,465.71
5. Step 5: Solve for x
   x = 2,421,465.71/2,335.37
6. Step 6: Final answer
   x = 1,036.87