Finding the Fourth Proportional to 2,275.52, 3,413.67 and 977.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,275.52 : 3,413.67 = 977.90 : x
2. Step 2: Convert to fraction form
   2,275.52/3,413.67 = 977.90/x
3. Step 3: Cross multiply
   2,275.52x = 3,413.67 × 977.90
4. Step 4: Simplify right side
   2,275.52x = 3,338,210.82
5. Step 5: Solve for x
   x = 3,338,210.82/2,275.52
6. Step 6: Final answer
   x = 1,467.01