Finding the Fourth Proportional to 1,888.48, 2,831.59 and 848.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,888.48 : 2,831.59 = 848.31 : x
2. Step 2: Convert to fraction form
   1,888.48/2,831.59 = 848.31/x
3. Step 3: Cross multiply
   1,888.48x = 2,831.59 × 848.31
4. Step 4: Simplify right side
   1,888.48x = 2,402,056.55
5. Step 5: Solve for x
   x = 2,402,056.55/1,888.48
6. Step 6: Final answer
   x = 1,271.95