Finding the Fourth Proportional to 1,913.63, 2,640.83 and 1,074.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,913.63 : 2,640.83 = 1,074.33 : x
2. Step 2: Convert to fraction form
   1,913.63/2,640.83 = 1,074.33/x
3. Step 3: Cross multiply
   1,913.63x = 2,640.83 × 1,074.33
4. Step 4: Simplify right side
   1,913.63x = 2,837,117.52
5. Step 5: Solve for x
   x = 2,837,117.52/1,913.63
6. Step 6: Final answer
   x = 1,482.59