Finding the Fourth Proportional to 1,227.21, 1,693.59 and 703.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,227.21 : 1,693.59 = 703.29 : x
2. Step 2: Convert to fraction form
   1,227.21/1,693.59 = 703.29/x
3. Step 3: Cross multiply
   1,227.21x = 1,693.59 × 703.29
4. Step 4: Simplify right side
   1,227.21x = 1,191,084.91
5. Step 5: Solve for x
   x = 1,191,084.91/1,227.21
6. Step 6: Final answer
   x = 970.56