Finding the Fourth Proportional to 1,576.06, 2,177.69 and 1,296.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,576.06 : 2,177.69 = 1,296.10 : x
2. Step 2: Convert to fraction form
   1,576.06/2,177.69 = 1,296.10/x
3. Step 3: Cross multiply
   1,576.06x = 2,177.69 × 1,296.10
4. Step 4: Simplify right side
   1,576.06x = 2,822,500.25
5. Step 5: Solve for x
   x = 2,822,500.25/1,576.06
6. Step 6: Final answer
   x = 1,790.86