Finding the Fourth Proportional to 1,357.61, 1,873.83 and 886.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,357.61 : 1,873.83 = 886.68 : x
2. Step 2: Convert to fraction form
   1,357.61/1,873.83 = 886.68/x
3. Step 3: Cross multiply
   1,357.61x = 1,873.83 × 886.68
4. Step 4: Simplify right side
   1,357.61x = 1,661,490.91
5. Step 5: Solve for x
   x = 1,661,490.91/1,357.61
6. Step 6: Final answer
   x = 1,223.83