Finding the Fourth Proportional to 1,870.09, 2,580.78 and 1,073.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.09 : 2,580.78 = 1,073.56 : x
2. Step 2: Convert to fraction form
   1,870.09/2,580.78 = 1,073.56/x
3. Step 3: Cross multiply
   1,870.09x = 2,580.78 × 1,073.56
4. Step 4: Simplify right side
   1,870.09x = 2,770,622.18
5. Step 5: Solve for x
   x = 2,770,622.18/1,870.09
6. Step 6: Final answer
   x = 1,481.54