Finding the Fourth Proportional to 2,068.31, 3,101.65 and 913.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,068.31 : 3,101.65 = 913.25 : x
2. Step 2: Convert to fraction form
   2,068.31/3,101.65 = 913.25/x
3. Step 3: Cross multiply
   2,068.31x = 3,101.65 × 913.25
4. Step 4: Simplify right side
   2,068.31x = 2,832,581.86
5. Step 5: Solve for x
   x = 2,832,581.86/2,068.31
6. Step 6: Final answer
   x = 1,369.52