Finding the Fourth Proportional to 1,945.10, 2,686.48 and 1,416.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,945.10 : 2,686.48 = 1,416.35 : x
2. Step 2: Convert to fraction form
   1,945.10/2,686.48 = 1,416.35/x
3. Step 3: Cross multiply
   1,945.10x = 2,686.48 × 1,416.35
4. Step 4: Simplify right side
   1,945.10x = 3,805,002.05
5. Step 5: Solve for x
   x = 3,805,002.05/1,945.10
6. Step 6: Final answer
   x = 1,956.19