Finding the Fourth Proportional to 3,762.58, 5,640.50 and 1,422.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,762.58 : 5,640.50 = 1,422.15 : x
2. Step 2: Convert to fraction form
   3,762.58/5,640.50 = 1,422.15/x
3. Step 3: Cross multiply
   3,762.58x = 5,640.50 × 1,422.15
4. Step 4: Simplify right side
   3,762.58x = 8,021,618.89
5. Step 5: Solve for x
   x = 8,021,618.89/3,762.58
6. Step 6: Final answer
   x = 2,131.95