Finding the Fourth Proportional to 1,490.00, 2,056.19 and 860.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,490.00 : 2,056.19 = 860.51 : x
2. Step 2: Convert to fraction form
   1,490.00/2,056.19 = 860.51/x
3. Step 3: Cross multiply
   1,490.00x = 2,056.19 × 860.51
4. Step 4: Simplify right side
   1,490.00x = 1,769,372.89
5. Step 5: Solve for x
   x = 1,769,372.89/1,490.00
6. Step 6: Final answer
   x = 1,187.50