Finding the Fourth Proportional to 1,633.36, 2,253.72 and 970.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,633.36 : 2,253.72 = 970.42 : x
2. Step 2: Convert to fraction form
   1,633.36/2,253.72 = 970.42/x
3. Step 3: Cross multiply
   1,633.36x = 2,253.72 × 970.42
4. Step 4: Simplify right side
   1,633.36x = 2,187,054.96
5. Step 5: Solve for x
   x = 2,187,054.96/1,633.36
6. Step 6: Final answer
   x = 1,338.99