Finding the Fourth Proportional to 1,339.91, 1,848.71 and 867.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,339.91 : 1,848.71 = 867.95 : x
2. Step 2: Convert to fraction form
   1,339.91/1,848.71 = 867.95/x
3. Step 3: Cross multiply
   1,339.91x = 1,848.71 × 867.95
4. Step 4: Simplify right side
   1,339.91x = 1,604,580.77
5. Step 5: Solve for x
   x = 1,604,580.77/1,339.91
6. Step 6: Final answer
   x = 1,197.53