Finding the Fourth Proportional to 1,385.54, 2,079.12 and 995.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385.54 : 2,079.12 = 995.12 : x
2. Step 2: Convert to fraction form
   1,385.54/2,079.12 = 995.12/x
3. Step 3: Cross multiply
   1,385.54x = 2,079.12 × 995.12
4. Step 4: Simplify right side
   1,385.54x = 2,068,973.89
5. Step 5: Solve for x
   x = 2,068,973.89/1,385.54
6. Step 6: Final answer
   x = 1,493.26