Finding the Fourth Proportional to 1,978.74, 2,730.56 and 1,094.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.74 : 2,730.56 = 1,094.40 : x
2. Step 2: Convert to fraction form
   1,978.74/2,730.56 = 1,094.40/x
3. Step 3: Cross multiply
   1,978.74x = 2,730.56 × 1,094.40
4. Step 4: Simplify right side
   1,978.74x = 2,988,319.39
5. Step 5: Solve for x
   x = 2,988,319.39/1,978.74
6. Step 6: Final answer
   x = 1,510.21