Finding the Fourth Proportional to 1,373.72, 2,059.58 and 910.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,373.72 : 2,059.58 = 910.92 : x
2. Step 2: Convert to fraction form
   1,373.72/2,059.58 = 910.92/x
3. Step 3: Cross multiply
   1,373.72x = 2,059.58 × 910.92
4. Step 4: Simplify right side
   1,373.72x = 1,876,112.61
5. Step 5: Solve for x
   x = 1,876,112.61/1,373.72
6. Step 6: Final answer
   x = 1,365.72