Finding the Fourth Proportional to 3,630.61, 5,445.59 and 1,131.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,630.61 : 5,445.59 = 1,131.69 : x
2. Step 2: Convert to fraction form
   3,630.61/5,445.59 = 1,131.69/x
3. Step 3: Cross multiply
   3,630.61x = 5,445.59 × 1,131.69
4. Step 4: Simplify right side
   3,630.61x = 6,162,703.88
5. Step 5: Solve for x
   x = 6,162,703.88/3,630.61
6. Step 6: Final answer
   x = 1,697.43