Finding the Fourth Proportional to 1,798.35, 2,696.59 and 920.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,798.35 : 2,696.59 = 920.71 : x
2. Step 2: Convert to fraction form
   1,798.35/2,696.59 = 920.71/x
3. Step 3: Cross multiply
   1,798.35x = 2,696.59 × 920.71
4. Step 4: Simplify right side
   1,798.35x = 2,482,777.38
5. Step 5: Solve for x
   x = 2,482,777.38/1,798.35
6. Step 6: Final answer
   x = 1,380.59