Finding the Fourth Proportional to 2,007.61, 2,770.06 and 1,261.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.61 : 2,770.06 = 1,261.30 : x
2. Step 2: Convert to fraction form
   2,007.61/2,770.06 = 1,261.30/x
3. Step 3: Cross multiply
   2,007.61x = 2,770.06 × 1,261.30
4. Step 4: Simplify right side
   2,007.61x = 3,493,876.68
5. Step 5: Solve for x
   x = 3,493,876.68/2,007.61
6. Step 6: Final answer
   x = 1,740.32