Finding the Fourth Proportional to 2,068.30, 3,102.91 and 972.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,068.30 : 3,102.91 = 972.07 : x
2. Step 2: Convert to fraction form
   2,068.30/3,102.91 = 972.07/x
3. Step 3: Cross multiply
   2,068.30x = 3,102.91 × 972.07
4. Step 4: Simplify right side
   2,068.30x = 3,016,245.72
5. Step 5: Solve for x
   x = 3,016,245.72/2,068.30
6. Step 6: Final answer
   x = 1,458.32