Finding the Fourth Proportional to 2,390.15, 3,580.59 and 1,346.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,390.15 : 3,580.59 = 1,346.98 : x
2. Step 2: Convert to fraction form
   2,390.15/3,580.59 = 1,346.98/x
3. Step 3: Cross multiply
   2,390.15x = 3,580.59 × 1,346.98
4. Step 4: Simplify right side
   2,390.15x = 4,822,983.12
5. Step 5: Solve for x
   x = 4,822,983.12/2,390.15
6. Step 6: Final answer
   x = 2,017.86