Finding the Fourth Proportional to 1,678.42, 2,506.32 and 1,370.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,678.42 : 2,506.32 = 1,370.88 : x
2. Step 2: Convert to fraction form
   1,678.42/2,506.32 = 1,370.88/x
3. Step 3: Cross multiply
   1,678.42x = 2,506.32 × 1,370.88
4. Step 4: Simplify right side
   1,678.42x = 3,435,851.43
5. Step 5: Solve for x
   x = 3,435,851.43/1,678.42
6. Step 6: Final answer
   x = 2,047.07