Finding the Fourth Proportional to 3,379.56, 5,070.15 and 1,071.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,379.56 : 5,070.15 = 1,071.06 : x
2. Step 2: Convert to fraction form
   3,379.56/5,070.15 = 1,071.06/x
3. Step 3: Cross multiply
   3,379.56x = 5,070.15 × 1,071.06
4. Step 4: Simplify right side
   3,379.56x = 5,430,434.86
5. Step 5: Solve for x
   x = 5,430,434.86/3,379.56
6. Step 6: Final answer
   x = 1,606.85