Finding the Fourth Proportional to 1,293.07, 1,784.38 and 703.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,293.07 : 1,784.38 = 703.61 : x
2. Step 2: Convert to fraction form
   1,293.07/1,784.38 = 703.61/x
3. Step 3: Cross multiply
   1,293.07x = 1,784.38 × 703.61
4. Step 4: Simplify right side
   1,293.07x = 1,255,498.69
5. Step 5: Solve for x
   x = 1,255,498.69/1,293.07
6. Step 6: Final answer
   x = 970.95