Finding the Fourth Proportional to 1,651.12, 2,476.72 and 785.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,651.12 : 2,476.72 = 785.52 : x
2. Step 2: Convert to fraction form
   1,651.12/2,476.72 = 785.52/x
3. Step 3: Cross multiply
   1,651.12x = 2,476.72 × 785.52
4. Step 4: Simplify right side
   1,651.12x = 1,945,513.09
5. Step 5: Solve for x
   x = 1,945,513.09/1,651.12
6. Step 6: Final answer
   x = 1,178.30