Finding the Fourth Proportional to 2,075.40, 2,863.55 and 1,404.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,075.40 : 2,863.55 = 1,404.45 : x
2. Step 2: Convert to fraction form
   2,075.40/2,863.55 = 1,404.45/x
3. Step 3: Cross multiply
   2,075.40x = 2,863.55 × 1,404.45
4. Step 4: Simplify right side
   2,075.40x = 4,021,705.78
5. Step 5: Solve for x
   x = 4,021,705.78/2,075.40
6. Step 6: Final answer
   x = 1,937.80