Finding the Fourth Proportional to 1,947.01, 2,920.56 and 697.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,947.01 : 2,920.56 = 697.69 : x
2. Step 2: Convert to fraction form
   1,947.01/2,920.56 = 697.69/x
3. Step 3: Cross multiply
   1,947.01x = 2,920.56 × 697.69
4. Step 4: Simplify right side
   1,947.01x = 2,037,638.21
5. Step 5: Solve for x
   x = 2,037,638.21/1,947.01
6. Step 6: Final answer
   x = 1,046.55