Finding the Fourth Proportional to 1,810.34, 2,495.85 and 1,438.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,810.34 : 2,495.85 = 1,438.55 : x
2. Step 2: Convert to fraction form
   1,810.34/2,495.85 = 1,438.55/x
3. Step 3: Cross multiply
   1,810.34x = 2,495.85 × 1,438.55
4. Step 4: Simplify right side
   1,810.34x = 3,590,405.02
5. Step 5: Solve for x
   x = 3,590,405.02/1,810.34
6. Step 6: Final answer
   x = 1,983.28