Finding the Fourth Proportional to 1,785.27, 2,463.60 and 999.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,785.27 : 2,463.60 = 999.30 : x
2. Step 2: Convert to fraction form
   1,785.27/2,463.60 = 999.30/x
3. Step 3: Cross multiply
   1,785.27x = 2,463.60 × 999.30
4. Step 4: Simplify right side
   1,785.27x = 2,461,875.48
5. Step 5: Solve for x
   x = 2,461,875.48/1,785.27
6. Step 6: Final answer
   x = 1,378.99