Finding the Fourth Proportional to 1,448.57, 1,999.01 and 785.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,448.57 : 1,999.01 = 785.42 : x
2. Step 2: Convert to fraction form
   1,448.57/1,999.01 = 785.42/x
3. Step 3: Cross multiply
   1,448.57x = 1,999.01 × 785.42
4. Step 4: Simplify right side
   1,448.57x = 1,570,062.43
5. Step 5: Solve for x
   x = 1,570,062.43/1,448.57
6. Step 6: Final answer
   x = 1,083.87