Finding the Fourth Proportional to 1,622.42, 2,238.98 and 992.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,622.42 : 2,238.98 = 992.93 : x
2. Step 2: Convert to fraction form
   1,622.42/2,238.98 = 992.93/x
3. Step 3: Cross multiply
   1,622.42x = 2,238.98 × 992.93
4. Step 4: Simplify right side
   1,622.42x = 2,223,150.41
5. Step 5: Solve for x
   x = 2,223,150.41/1,622.42
6. Step 6: Final answer
   x = 1,370.27