Finding the Fourth Proportional to 1,802.19, 2,487.06 and 1,056.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,802.19 : 2,487.06 = 1,056.72 : x
2. Step 2: Convert to fraction form
   1,802.19/2,487.06 = 1,056.72/x
3. Step 3: Cross multiply
   1,802.19x = 2,487.06 × 1,056.72
4. Step 4: Simplify right side
   1,802.19x = 2,628,126.04
5. Step 5: Solve for x
   x = 2,628,126.04/1,802.19
6. Step 6: Final answer
   x = 1,458.30