Finding the Fourth Proportional to 2,445.53, 3,667.91 and 690.66

Step by Step Solution

1. Step 1: Write the proportion equation
   2,445.53 : 3,667.91 = 690.66 : x
2. Step 2: Convert to fraction form
   2,445.53/3,667.91 = 690.66/x
3. Step 3: Cross multiply
   2,445.53x = 3,667.91 × 690.66
4. Step 4: Simplify right side
   2,445.53x = 2,533,275.27
5. Step 5: Solve for x
   x = 2,533,275.27/2,445.53
6. Step 6: Final answer
   x = 1,035.88