Finding the Fourth Proportional to 1,656.15, 2,485.41 and 1,340.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,656.15 : 2,485.41 = 1,340.31 : x
2. Step 2: Convert to fraction form
   1,656.15/2,485.41 = 1,340.31/x
3. Step 3: Cross multiply
   1,656.15x = 2,485.41 × 1,340.31
4. Step 4: Simplify right side
   1,656.15x = 3,331,219.88
5. Step 5: Solve for x
   x = 3,331,219.88/1,656.15
6. Step 6: Final answer
   x = 2,011.42