Finding the Fourth Proportional to 2,583.90, 3,565.71 and 1,404.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,583.90 : 3,565.71 = 1,404.90 : x
2. Step 2: Convert to fraction form
   2,583.90/3,565.71 = 1,404.90/x
3. Step 3: Cross multiply
   2,583.90x = 3,565.71 × 1,404.90
4. Step 4: Simplify right side
   2,583.90x = 5,009,465.98
5. Step 5: Solve for x
   x = 5,009,465.98/2,583.90
6. Step 6: Final answer
   x = 1,938.72