Finding the Fourth Proportional to 2,099.34, 3,146.85 and 1,056.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099.34 : 3,146.85 = 1,056.15 : x
2. Step 2: Convert to fraction form
   2,099.34/3,146.85 = 1,056.15/x
3. Step 3: Cross multiply
   2,099.34x = 3,146.85 × 1,056.15
4. Step 4: Simplify right side
   2,099.34x = 3,323,545.63
5. Step 5: Solve for x
   x = 3,323,545.63/2,099.34
6. Step 6: Final answer
   x = 1,583.14