Finding the Fourth Proportional to 2,048.79, 2,829.33 and 1,388.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,048.79 : 2,829.33 = 1,388.19 : x
2. Step 2: Convert to fraction form
   2,048.79/2,829.33 = 1,388.19/x
3. Step 3: Cross multiply
   2,048.79x = 2,829.33 × 1,388.19
4. Step 4: Simplify right side
   2,048.79x = 3,927,647.61
5. Step 5: Solve for x
   x = 3,927,647.61/2,048.79
6. Step 6: Final answer
   x = 1,917.06