Finding the Fourth Proportional to 2,005.57, 3,008.76 and 707.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,005.57 : 3,008.76 = 707.05 : x
2. Step 2: Convert to fraction form
   2,005.57/3,008.76 = 707.05/x
3. Step 3: Cross multiply
   2,005.57x = 3,008.76 × 707.05
4. Step 4: Simplify right side
   2,005.57x = 2,127,343.76
5. Step 5: Solve for x
   x = 2,127,343.76/2,005.57
6. Step 6: Final answer
   x = 1,060.72