Finding the Fourth Proportional to 1,422.52, 2,131.37 and 1,009.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422.52 : 2,131.37 = 1,009.60 : x
2. Step 2: Convert to fraction form
   1,422.52/2,131.37 = 1,009.60/x
3. Step 3: Cross multiply
   1,422.52x = 2,131.37 × 1,009.60
4. Step 4: Simplify right side
   1,422.52x = 2,151,824.56
5. Step 5: Solve for x
   x = 2,151,824.56/1,422.52
6. Step 6: Final answer
   x = 1,512.69