Finding the Fourth Proportional to 1,063.50, 1,587.77 and 909.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,063.50 : 1,587.77 = 909.48 : x
2. Step 2: Convert to fraction form
   1,063.50/1,587.77 = 909.48/x
3. Step 3: Cross multiply
   1,063.50x = 1,587.77 × 909.48
4. Step 4: Simplify right side
   1,063.50x = 1,444,045.06
5. Step 5: Solve for x
   x = 1,444,045.06/1,063.50
6. Step 6: Final answer
   x = 1,357.82