Finding the Fourth Proportional to 2,066.76, 3,100.62 and 913.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,066.76 : 3,100.62 = 913.32 : x
2. Step 2: Convert to fraction form
   2,066.76/3,100.62 = 913.32/x
3. Step 3: Cross multiply
   2,066.76x = 3,100.62 × 913.32
4. Step 4: Simplify right side
   2,066.76x = 2,831,858.26
5. Step 5: Solve for x
   x = 2,831,858.26/2,066.76
6. Step 6: Final answer
   x = 1,370.19