Finding the Fourth Proportional to 3,680.55, 5,513.90 and 1,830.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,680.55 : 5,513.90 = 1,830.69 : x
2. Step 2: Convert to fraction form
   3,680.55/5,513.90 = 1,830.69/x
3. Step 3: Cross multiply
   3,680.55x = 5,513.90 × 1,830.69
4. Step 4: Simplify right side
   3,680.55x = 10,094,232.44
5. Step 5: Solve for x
   x = 10,094,232.44/3,680.55
6. Step 6: Final answer
   x = 2,742.59