Finding the Fourth Proportional to 1,810.23, 2,500.18 and 1,219.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,810.23 : 2,500.18 = 1,219.74 : x
2. Step 2: Convert to fraction form
   1,810.23/2,500.18 = 1,219.74/x
3. Step 3: Cross multiply
   1,810.23x = 2,500.18 × 1,219.74
4. Step 4: Simplify right side
   1,810.23x = 3,049,569.55
5. Step 5: Solve for x
   x = 3,049,569.55/1,810.23
6. Step 6: Final answer
   x = 1,684.63