Finding the Fourth Proportional to 1,384.87, 1,910.24 and 887.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384.87 : 1,910.24 = 887.33 : x
2. Step 2: Convert to fraction form
   1,384.87/1,910.24 = 887.33/x
3. Step 3: Cross multiply
   1,384.87x = 1,910.24 × 887.33
4. Step 4: Simplify right side
   1,384.87x = 1,695,013.26
5. Step 5: Solve for x
   x = 1,695,013.26/1,384.87
6. Step 6: Final answer
   x = 1,223.95