Finding the Fourth Proportional to 1,887.80, 2,605.22 and 1,141.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,887.80 : 2,605.22 = 1,141.89 : x
2. Step 2: Convert to fraction form
   1,887.80/2,605.22 = 1,141.89/x
3. Step 3: Cross multiply
   1,887.80x = 2,605.22 × 1,141.89
4. Step 4: Simplify right side
   1,887.80x = 2,974,880.31
5. Step 5: Solve for x
   x = 2,974,880.31/1,887.80
6. Step 6: Final answer
   x = 1,575.85