Finding the Fourth Proportional to 1,938.86, 2,675.64 and 1,142.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,938.86 : 2,675.64 = 1,142.22 : x
2. Step 2: Convert to fraction form
   1,938.86/2,675.64 = 1,142.22/x
3. Step 3: Cross multiply
   1,938.86x = 2,675.64 × 1,142.22
4. Step 4: Simplify right side
   1,938.86x = 3,056,169.52
5. Step 5: Solve for x
   x = 3,056,169.52/1,938.86
6. Step 6: Final answer
   x = 1,576.27