Finding the Fourth Proportional to 1,405.35, 2,105.88 and 710.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,405.35 : 2,105.88 = 710.08 : x
2. Step 2: Convert to fraction form
   1,405.35/2,105.88 = 710.08/x
3. Step 3: Cross multiply
   1,405.35x = 2,105.88 × 710.08
4. Step 4: Simplify right side
   1,405.35x = 1,495,339.72
5. Step 5: Solve for x
   x = 1,495,339.72/1,405.35
6. Step 6: Final answer
   x = 1,064.03