Finding the Fourth Proportional to 3,155.72, 4,355.91 and 1,830.74

Step by Step Solution

1. Step 1: Write the proportion equation
   3,155.72 : 4,355.91 = 1,830.74 : x
2. Step 2: Convert to fraction form
   3,155.72/4,355.91 = 1,830.74/x
3. Step 3: Cross multiply
   3,155.72x = 4,355.91 × 1,830.74
4. Step 4: Simplify right side
   3,155.72x = 7,974,516.89
5. Step 5: Solve for x
   x = 7,974,516.89/3,155.72
6. Step 6: Final answer
   x = 2,527.01