Finding the Fourth Proportional to 1,950.78, 2,692.40 and 1,165.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,950.78 : 2,692.40 = 1,165.30 : x
2. Step 2: Convert to fraction form
   1,950.78/2,692.40 = 1,165.30/x
3. Step 3: Cross multiply
   1,950.78x = 2,692.40 × 1,165.30
4. Step 4: Simplify right side
   1,950.78x = 3,137,453.72
5. Step 5: Solve for x
   x = 3,137,453.72/1,950.78
6. Step 6: Final answer
   x = 1,608.31