Finding the Fourth Proportional to 1,802.88, 2,488.39 and 1,056.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,802.88 : 2,488.39 = 1,056.87 : x
2. Step 2: Convert to fraction form
   1,802.88/2,488.39 = 1,056.87/x
3. Step 3: Cross multiply
   1,802.88x = 2,488.39 × 1,056.87
4. Step 4: Simplify right side
   1,802.88x = 2,629,902.10
5. Step 5: Solve for x
   x = 2,629,902.10/1,802.88
6. Step 6: Final answer
   x = 1,458.72