Finding the Fourth Proportional to 3,191.94, 4,785.60 and 999.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,191.94 : 4,785.60 = 999.48 : x
2. Step 2: Convert to fraction form
   3,191.94/4,785.60 = 999.48/x
3. Step 3: Cross multiply
   3,191.94x = 4,785.60 × 999.48
4. Step 4: Simplify right side
   3,191.94x = 4,783,111.49
5. Step 5: Solve for x
   x = 4,783,111.49/3,191.94
6. Step 6: Final answer
   x = 1,498.50