Finding the Fourth Proportional to 3,406.95, 5,111.10 and 1,066.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,406.95 : 5,111.10 = 1,066.86 : x
2. Step 2: Convert to fraction form
   3,406.95/5,111.10 = 1,066.86/x
3. Step 3: Cross multiply
   3,406.95x = 5,111.10 × 1,066.86
4. Step 4: Simplify right side
   3,406.95x = 5,452,828.15
5. Step 5: Solve for x
   x = 5,452,828.15/3,406.95
6. Step 6: Final answer
   x = 1,600.50