Finding the Fourth Proportional to 1,756.47, 2,634.91 and 782.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,756.47 : 2,634.91 = 782.45 : x
2. Step 2: Convert to fraction form
   1,756.47/2,634.91 = 782.45/x
3. Step 3: Cross multiply
   1,756.47x = 2,634.91 × 782.45
4. Step 4: Simplify right side
   1,756.47x = 2,061,685.33
5. Step 5: Solve for x
   x = 2,061,685.33/1,756.47
6. Step 6: Final answer
   x = 1,173.77