Finding the Fourth Proportional to 2,074.10, 3,111.15 and 535.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,074.10 : 3,111.15 = 535.10 : x
2. Step 2: Convert to fraction form
   2,074.10/3,111.15 = 535.10/x
3. Step 3: Cross multiply
   2,074.10x = 3,111.15 × 535.10
4. Step 4: Simplify right side
   2,074.10x = 1,664,776.37
5. Step 5: Solve for x
   x = 1,664,776.37/2,074.10
6. Step 6: Final answer
   x = 802.65