Finding the Fourth Proportional to 1,851.35, 2,552.21 and 1,142.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,851.35 : 2,552.21 = 1,142.72 : x
2. Step 2: Convert to fraction form
   1,851.35/2,552.21 = 1,142.72/x
3. Step 3: Cross multiply
   1,851.35x = 2,552.21 × 1,142.72
4. Step 4: Simplify right side
   1,851.35x = 2,916,461.41
5. Step 5: Solve for x
   x = 2,916,461.41/1,851.35
6. Step 6: Final answer
   x = 1,575.32