Finding the Fourth Proportional to 1,499.63, 2,069.51 and 870.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499.63 : 2,069.51 = 870.29 : x
2. Step 2: Convert to fraction form
   1,499.63/2,069.51 = 870.29/x
3. Step 3: Cross multiply
   1,499.63x = 2,069.51 × 870.29
4. Step 4: Simplify right side
   1,499.63x = 1,801,069.51
5. Step 5: Solve for x
   x = 1,801,069.51/1,499.63
6. Step 6: Final answer
   x = 1,201.01