Finding the Fourth Proportional to 1,422.71, 2,131.52 and 599.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422.71 : 2,131.52 = 599.55 : x
2. Step 2: Convert to fraction form
   1,422.71/2,131.52 = 599.55/x
3. Step 3: Cross multiply
   1,422.71x = 2,131.52 × 599.55
4. Step 4: Simplify right side
   1,422.71x = 1,277,953.81
5. Step 5: Solve for x
   x = 1,277,953.81/1,422.71
6. Step 6: Final answer
   x = 898.25