Finding the Fourth Proportional to 1,780.38, 2,458.21 and 1,151.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,780.38 : 2,458.21 = 1,151.27 : x
2. Step 2: Convert to fraction form
   1,780.38/2,458.21 = 1,151.27/x
3. Step 3: Cross multiply
   1,780.38x = 2,458.21 × 1,151.27
4. Step 4: Simplify right side
   1,780.38x = 2,830,063.43
5. Step 5: Solve for x
   x = 2,830,063.43/1,780.38
6. Step 6: Final answer
   x = 1,589.58