Finding the Fourth Proportional to 3,407.16, 5,108.88 and 1,066.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,407.16 : 5,108.88 = 1,066.15 : x
2. Step 2: Convert to fraction form
   3,407.16/5,108.88 = 1,066.15/x
3. Step 3: Cross multiply
   3,407.16x = 5,108.88 × 1,066.15
4. Step 4: Simplify right side
   3,407.16x = 5,446,832.41
5. Step 5: Solve for x
   x = 5,446,832.41/3,407.16
6. Step 6: Final answer
   x = 1,598.64