Finding the Fourth Proportional to 1,407.92, 1,941.82 and 1,313.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,407.92 : 1,941.82 = 1,313.61 : x
2. Step 2: Convert to fraction form
   1,407.92/1,941.82 = 1,313.61/x
3. Step 3: Cross multiply
   1,407.92x = 1,941.82 × 1,313.61
4. Step 4: Simplify right side
   1,407.92x = 2,550,784.46
5. Step 5: Solve for x
   x = 2,550,784.46/1,407.92
6. Step 6: Final answer
   x = 1,811.74