Finding the Fourth Proportional to 1,743.83, 2,613.86 and 647.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,743.83 : 2,613.86 = 647.59 : x
2. Step 2: Convert to fraction form
   1,743.83/2,613.86 = 647.59/x
3. Step 3: Cross multiply
   1,743.83x = 2,613.86 × 647.59
4. Step 4: Simplify right side
   1,743.83x = 1,692,709.60
5. Step 5: Solve for x
   x = 1,692,709.60/1,743.83
6. Step 6: Final answer
   x = 970.69