Finding the Fourth Proportional to 4,752.81, 7,128.50 and 1,830.69

Step by Step Solution

1. Step 1: Write the proportion equation
   4,752.81 : 7,128.50 = 1,830.69 : x
2. Step 2: Convert to fraction form
   4,752.81/7,128.50 = 1,830.69/x
3. Step 3: Cross multiply
   4,752.81x = 7,128.50 × 1,830.69
4. Step 4: Simplify right side
   4,752.81x = 13,050,064.51
5. Step 5: Solve for x
   x = 13,050,064.51/4,752.81
6. Step 6: Final answer
   x = 2,745.76