Finding the Fourth Proportional to 3,379.96, 5,070.71 and 1,128.66

Step by Step Solution

1. Step 1: Write the proportion equation
   3,379.96 : 5,070.71 = 1,128.66 : x
2. Step 2: Convert to fraction form
   3,379.96/5,070.71 = 1,128.66/x
3. Step 3: Cross multiply
   3,379.96x = 5,070.71 × 1,128.66
4. Step 4: Simplify right side
   3,379.96x = 5,723,107.55
5. Step 5: Solve for x
   x = 5,723,107.55/3,379.96
6. Step 6: Final answer
   x = 1,693.25