Finding the Fourth Proportional to 1,802.30, 2,487.79 and 1,056.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,802.30 : 2,487.79 = 1,056.50 : x
2. Step 2: Convert to fraction form
   1,802.30/2,487.79 = 1,056.50/x
3. Step 3: Cross multiply
   1,802.30x = 2,487.79 × 1,056.50
4. Step 4: Simplify right side
   1,802.30x = 2,628,337.70
5. Step 5: Solve for x
   x = 2,628,337.70/1,802.30
6. Step 6: Final answer
   x = 1,458.33