Finding the Fourth Proportional to 2,870.01, 4,305.06 and 1,309.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.01 : 4,305.06 = 1,309.95 : x
2. Step 2: Convert to fraction form
   2,870.01/4,305.06 = 1,309.95/x
3. Step 3: Cross multiply
   2,870.01x = 4,305.06 × 1,309.95
4. Step 4: Simplify right side
   2,870.01x = 5,639,413.35
5. Step 5: Solve for x
   x = 5,639,413.35/2,870.01
6. Step 6: Final answer
   x = 1,964.95