Finding the Fourth Proportional to 1,804.95, 2,706.89 and 938.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,804.95 : 2,706.89 = 938.79 : x
2. Step 2: Convert to fraction form
   1,804.95/2,706.89 = 938.79/x
3. Step 3: Cross multiply
   1,804.95x = 2,706.89 × 938.79
4. Step 4: Simplify right side
   1,804.95x = 2,541,196.57
5. Step 5: Solve for x
   x = 2,541,196.57/1,804.95
6. Step 6: Final answer
   x = 1,407.90