Finding the Fourth Proportional to 1,851.98, 2,553.63 and 1,385.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,851.98 : 2,553.63 = 1,385.42 : x
2. Step 2: Convert to fraction form
   1,851.98/2,553.63 = 1,385.42/x
3. Step 3: Cross multiply
   1,851.98x = 2,553.63 × 1,385.42
4. Step 4: Simplify right side
   1,851.98x = 3,537,850.07
5. Step 5: Solve for x
   x = 3,537,850.07/1,851.98
6. Step 6: Final answer
   x = 1,910.31