Finding the Fourth Proportional to 2,105.34, 3,158.93 and 1,130.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.34 : 3,158.93 = 1,130.30 : x
2. Step 2: Convert to fraction form
   2,105.34/3,158.93 = 1,130.30/x
3. Step 3: Cross multiply
   2,105.34x = 3,158.93 × 1,130.30
4. Step 4: Simplify right side
   2,105.34x = 3,570,517.13
5. Step 5: Solve for x
   x = 3,570,517.13/2,105.34
6. Step 6: Final answer
   x = 1,695.93