Finding the Fourth Proportional to 1,842.09, 2,760.18 and 916.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,842.09 : 2,760.18 = 916.72 : x
2. Step 2: Convert to fraction form
   1,842.09/2,760.18 = 916.72/x
3. Step 3: Cross multiply
   1,842.09x = 2,760.18 × 916.72
4. Step 4: Simplify right side
   1,842.09x = 2,530,301.87
5. Step 5: Solve for x
   x = 2,530,301.87/1,842.09
6. Step 6: Final answer
   x = 1,373.60