Finding the Fourth Proportional to 1,368.79, 1,887.06 and 995.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,368.79 : 1,887.06 = 995.78 : x
2. Step 2: Convert to fraction form
   1,368.79/1,887.06 = 995.78/x
3. Step 3: Cross multiply
   1,368.79x = 1,887.06 × 995.78
4. Step 4: Simplify right side
   1,368.79x = 1,879,096.61
5. Step 5: Solve for x
   x = 1,879,096.61/1,368.79
6. Step 6: Final answer
   x = 1,372.82