Finding the Fourth Proportional to 3,380.22, 5,066.88 and 1,407

Step by Step Solution

1. Step 1: Write the proportion equation
   3,380.22 : 5,066.88 = 1,407 : x
2. Step 2: Convert to fraction form
   3,380.22/5,066.88 = 1,407/x
3. Step 3: Cross multiply
   3,380.22x = 5,066.88 × 1,407
4. Step 4: Simplify right side
   3,380.22x = 7,129,100.16
5. Step 5: Solve for x
   x = 7,129,100.16/3,380.22
6. Step 6: Final answer
   x = 2,109.06