Finding the Fourth Proportional to 1,373.76, 2,056.06 and 1,098.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,373.76 : 2,056.06 = 1,098.56 : x
2. Step 2: Convert to fraction form
   1,373.76/2,056.06 = 1,098.56/x
3. Step 3: Cross multiply
   1,373.76x = 2,056.06 × 1,098.56
4. Step 4: Simplify right side
   1,373.76x = 2,258,705.27
5. Step 5: Solve for x
   x = 2,258,705.27/1,373.76
6. Step 6: Final answer
   x = 1,644.18