Finding the Fourth Proportional to 1,803.59, 2,705.31 and 1,072.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,803.59 : 2,705.31 = 1,072.62 : x
2. Step 2: Convert to fraction form
   1,803.59/2,705.31 = 1,072.62/x
3. Step 3: Cross multiply
   1,803.59x = 2,705.31 × 1,072.62
4. Step 4: Simplify right side
   1,803.59x = 2,901,763.51
5. Step 5: Solve for x
   x = 2,901,763.51/1,803.59
6. Step 6: Final answer
   x = 1,608.88