Finding the Fourth Proportional to 1,329.12, 1,830.47 and 1,300.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,329.12 : 1,830.47 = 1,300.43 : x
2. Step 2: Convert to fraction form
   1,329.12/1,830.47 = 1,300.43/x
3. Step 3: Cross multiply
   1,329.12x = 1,830.47 × 1,300.43
4. Step 4: Simplify right side
   1,329.12x = 2,380,382.45
5. Step 5: Solve for x
   x = 2,380,382.45/1,329.12
6. Step 6: Final answer
   x = 1,790.95