Finding the Fourth Proportional to 3,764.72, 5,641.86 and 1,422.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,764.72 : 5,641.86 = 1,422.32 : x
2. Step 2: Convert to fraction form
   3,764.72/5,641.86 = 1,422.32/x
3. Step 3: Cross multiply
   3,764.72x = 5,641.86 × 1,422.32
4. Step 4: Simplify right side
   3,764.72x = 8,024,530.32
5. Step 5: Solve for x
   x = 8,024,530.32/3,764.72
6. Step 6: Final answer
   x = 2,131.51