Finding the Fourth Proportional to 1,150.98, 1,587.95 and 885.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.98 : 1,587.95 = 885.50 : x
2. Step 2: Convert to fraction form
   1,150.98/1,587.95 = 885.50/x
3. Step 3: Cross multiply
   1,150.98x = 1,587.95 × 885.50
4. Step 4: Simplify right side
   1,150.98x = 1,406,117.36
5. Step 5: Solve for x
   x = 1,406,117.36/1,150.98
6. Step 6: Final answer
   x = 1,221.67