Finding the Fourth Proportional to 2,402.50, 3,315.45 and 1,298.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,402.50 : 3,315.45 = 1,298.50 : x
2. Step 2: Convert to fraction form
   2,402.50/3,315.45 = 1,298.50/x
3. Step 3: Cross multiply
   2,402.50x = 3,315.45 × 1,298.50
4. Step 4: Simplify right side
   2,402.50x = 4,305,111.83
5. Step 5: Solve for x
   x = 4,305,111.83/2,402.50
6. Step 6: Final answer
   x = 1,791.93