Finding the Fourth Proportional to 3,606.31, 5,407.31 and 1,298.35

Step by Step Solution

1. Step 1: Write the proportion equation
   3,606.31 : 5,407.31 = 1,298.35 : x
2. Step 2: Convert to fraction form
   3,606.31/5,407.31 = 1,298.35/x
3. Step 3: Cross multiply
   3,606.31x = 5,407.31 × 1,298.35
4. Step 4: Simplify right side
   3,606.31x = 7,020,574.45
5. Step 5: Solve for x
   x = 7,020,574.45/3,606.31
6. Step 6: Final answer
   x = 1,946.75