Finding the Fourth Proportional to 1,366.91, 1,886.89 and 948.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,366.91 : 1,886.89 = 948.63 : x
2. Step 2: Convert to fraction form
   1,366.91/1,886.89 = 948.63/x
3. Step 3: Cross multiply
   1,366.91x = 1,886.89 × 948.63
4. Step 4: Simplify right side
   1,366.91x = 1,789,960.46
5. Step 5: Solve for x
   x = 1,789,960.46/1,366.91
6. Step 6: Final answer
   x = 1,309.50