Finding the Fourth Proportional to 1,678.59, 2,513.03 and 1,401.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,678.59 : 2,513.03 = 1,401.57 : x
2. Step 2: Convert to fraction form
   1,678.59/2,513.03 = 1,401.57/x
3. Step 3: Cross multiply
   1,678.59x = 2,513.03 × 1,401.57
4. Step 4: Simplify right side
   1,678.59x = 3,522,180.45
5. Step 5: Solve for x
   x = 3,522,180.45/1,678.59
6. Step 6: Final answer
   x = 2,098.30