Finding the Fourth Proportional to 1,703.89, 2,552.23 and 780.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,703.89 : 2,552.23 = 780.22 : x
2. Step 2: Convert to fraction form
   1,703.89/2,552.23 = 780.22/x
3. Step 3: Cross multiply
   1,703.89x = 2,552.23 × 780.22
4. Step 4: Simplify right side
   1,703.89x = 1,991,300.89
5. Step 5: Solve for x
   x = 1,991,300.89/1,703.89
6. Step 6: Final answer
   x = 1,168.68