Finding the Fourth Proportional to 3,422.01, 5,131.80 and 1,081.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,422.01 : 5,131.80 = 1,081.32 : x
2. Step 2: Convert to fraction form
   3,422.01/5,131.80 = 1,081.32/x
3. Step 3: Cross multiply
   3,422.01x = 5,131.80 × 1,081.32
4. Step 4: Simplify right side
   3,422.01x = 5,549,117.98
5. Step 5: Solve for x
   x = 5,549,117.98/3,422.01
6. Step 6: Final answer
   x = 1,621.60