Finding the Fourth Proportional to 1,515.48, 2,268.35 and 784.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,515.48 : 2,268.35 = 784.05 : x
2. Step 2: Convert to fraction form
   1,515.48/2,268.35 = 784.05/x
3. Step 3: Cross multiply
   1,515.48x = 2,268.35 × 784.05
4. Step 4: Simplify right side
   1,515.48x = 1,778,499.82
5. Step 5: Solve for x
   x = 1,778,499.82/1,515.48
6. Step 6: Final answer
   x = 1,173.56