Finding the Fourth Proportional to 2,740.04, 3,781.54 and 1,678.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,740.04 : 3,781.54 = 1,678.50 : x
2. Step 2: Convert to fraction form
   2,740.04/3,781.54 = 1,678.50/x
3. Step 3: Cross multiply
   2,740.04x = 3,781.54 × 1,678.50
4. Step 4: Simplify right side
   2,740.04x = 6,347,314.89
5. Step 5: Solve for x
   x = 6,347,314.89/2,740.04
6. Step 6: Final answer
   x = 2,316.50