Finding the Fourth Proportional to 1,384.59, 1,910.73 and 887.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384.59 : 1,910.73 = 887.23 : x
2. Step 2: Convert to fraction form
   1,384.59/1,910.73 = 887.23/x
3. Step 3: Cross multiply
   1,384.59x = 1,910.73 × 887.23
4. Step 4: Simplify right side
   1,384.59x = 1,695,252.20
5. Step 5: Solve for x
   x = 1,695,252.20/1,384.59
6. Step 6: Final answer
   x = 1,224.38