Finding the Fourth Proportional to 2,093.10, 3,139.66 and 1,056.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,093.10 : 3,139.66 = 1,056.30 : x
2. Step 2: Convert to fraction form
   2,093.10/3,139.66 = 1,056.30/x
3. Step 3: Cross multiply
   2,093.10x = 3,139.66 × 1,056.30
4. Step 4: Simplify right side
   2,093.10x = 3,316,422.86
5. Step 5: Solve for x
   x = 3,316,422.86/2,093.10
6. Step 6: Final answer
   x = 1,584.46