Finding the Fourth Proportional to 1,380.44, 2,068.03 and 916.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,380.44 : 2,068.03 = 916.82 : x
2. Step 2: Convert to fraction form
   1,380.44/2,068.03 = 916.82/x
3. Step 3: Cross multiply
   1,380.44x = 2,068.03 × 916.82
4. Step 4: Simplify right side
   1,380.44x = 1,896,009.83
5. Step 5: Solve for x
   x = 1,896,009.83/1,380.44
6. Step 6: Final answer
   x = 1,373.48