Finding the Fourth Proportional to 1,978.30, 2,967.77 and 745.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.30 : 2,967.77 = 745.82 : x
2. Step 2: Convert to fraction form
   1,978.30/2,967.77 = 745.82/x
3. Step 3: Cross multiply
   1,978.30x = 2,967.77 × 745.82
4. Step 4: Simplify right side
   1,978.30x = 2,213,420.38
5. Step 5: Solve for x
   x = 2,213,420.38/1,978.30
6. Step 6: Final answer
   x = 1,118.85