Finding the Fourth Proportional to 1,641.34, 2,267.61 and 1,395.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,641.34 : 2,267.61 = 1,395.23 : x
2. Step 2: Convert to fraction form
   1,641.34/2,267.61 = 1,395.23/x
3. Step 3: Cross multiply
   1,641.34x = 2,267.61 × 1,395.23
4. Step 4: Simplify right side
   1,641.34x = 3,163,837.50
5. Step 5: Solve for x
   x = 3,163,837.50/1,641.34
6. Step 6: Final answer
   x = 1,927.59