Finding the Fourth Proportional to 1,680.42, 2,316.93 and 1,417.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,680.42 : 2,316.93 = 1,417.86 : x
2. Step 2: Convert to fraction form
   1,680.42/2,316.93 = 1,417.86/x
3. Step 3: Cross multiply
   1,680.42x = 2,316.93 × 1,417.86
4. Step 4: Simplify right side
   1,680.42x = 3,285,082.37
5. Step 5: Solve for x
   x = 3,285,082.37/1,680.42
6. Step 6: Final answer
   x = 1,954.92