Finding the Fourth Proportional to 1,826.01, 2,519.10 and 1,405.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,826.01 : 2,519.10 = 1,405.62 : x
2. Step 2: Convert to fraction form
   1,826.01/2,519.10 = 1,405.62/x
3. Step 3: Cross multiply
   1,826.01x = 2,519.10 × 1,405.62
4. Step 4: Simplify right side
   1,826.01x = 3,540,897.34
5. Step 5: Solve for x
   x = 3,540,897.34/1,826.01
6. Step 6: Final answer
   x = 1,939.14