Finding the Fourth Proportional to 1,200.81, 1,657.32 and 703.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200.81 : 1,657.32 = 703.57 : x
2. Step 2: Convert to fraction form
   1,200.81/1,657.32 = 703.57/x
3. Step 3: Cross multiply
   1,200.81x = 1,657.32 × 703.57
4. Step 4: Simplify right side
   1,200.81x = 1,166,040.63
5. Step 5: Solve for x
   x = 1,166,040.63/1,200.81
6. Step 6: Final answer
   x = 971.05