Finding the Fourth Proportional to 1,812.42, 2,505.06 and 1,601.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,812.42 : 2,505.06 = 1,601.10 : x
2. Step 2: Convert to fraction form
   1,812.42/2,505.06 = 1,601.10/x
3. Step 3: Cross multiply
   1,812.42x = 2,505.06 × 1,601.10
4. Step 4: Simplify right side
   1,812.42x = 4,010,851.57
5. Step 5: Solve for x
   x = 4,010,851.57/1,812.42
6. Step 6: Final answer
   x = 2,212.98