Finding the Fourth Proportional to 1,781.69, 2,458.80 and 995.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,781.69 : 2,458.80 = 995.58 : x
2. Step 2: Convert to fraction form
   1,781.69/2,458.80 = 995.58/x
3. Step 3: Cross multiply
   1,781.69x = 2,458.80 × 995.58
4. Step 4: Simplify right side
   1,781.69x = 2,447,932.10
5. Step 5: Solve for x
   x = 2,447,932.10/1,781.69
6. Step 6: Final answer
   x = 1,373.94