Finding the Fourth Proportional to 1,150.21, 1,587.87 and 708.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.21 : 1,587.87 = 708.37 : x
2. Step 2: Convert to fraction form
   1,150.21/1,587.87 = 708.37/x
3. Step 3: Cross multiply
   1,150.21x = 1,587.87 × 708.37
4. Step 4: Simplify right side
   1,150.21x = 1,124,795.50
5. Step 5: Solve for x
   x = 1,124,795.50/1,150.21
6. Step 6: Final answer
   x = 977.91