Finding the Fourth Proportional to 2,071.36, 3,109.10 and 976.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.36 : 3,109.10 = 976.50 : x
2. Step 2: Convert to fraction form
   2,071.36/3,109.10 = 976.50/x
3. Step 3: Cross multiply
   2,071.36x = 3,109.10 × 976.50
4. Step 4: Simplify right side
   2,071.36x = 3,036,036.15
5. Step 5: Solve for x
   x = 3,036,036.15/2,071.36
6. Step 6: Final answer
   x = 1,465.72