Finding the Fourth Proportional to 2,066.55, 3,100.28 and 970.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,066.55 : 3,100.28 = 970.31 : x
2. Step 2: Convert to fraction form
   2,066.55/3,100.28 = 970.31/x
3. Step 3: Cross multiply
   2,066.55x = 3,100.28 × 970.31
4. Step 4: Simplify right side
   2,066.55x = 3,008,235.59
5. Step 5: Solve for x
   x = 3,008,235.59/2,066.55
6. Step 6: Final answer
   x = 1,455.68