Finding the Fourth Proportional to 1,715.89, 2,368.06 and 970.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,715.89 : 2,368.06 = 970.09 : x
2. Step 2: Convert to fraction form
   1,715.89/2,368.06 = 970.09/x
3. Step 3: Cross multiply
   1,715.89x = 2,368.06 × 970.09
4. Step 4: Simplify right side
   1,715.89x = 2,297,231.33
5. Step 5: Solve for x
   x = 2,297,231.33/1,715.89
6. Step 6: Final answer
   x = 1,338.80