Finding the Fourth Proportional to 1,307.34, 1,804.15 and 717.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,307.34 : 1,804.15 = 717.93 : x
2. Step 2: Convert to fraction form
   1,307.34/1,804.15 = 717.93/x
3. Step 3: Cross multiply
   1,307.34x = 1,804.15 × 717.93
4. Step 4: Simplify right side
   1,307.34x = 1,295,254.31
5. Step 5: Solve for x
   x = 1,295,254.31/1,307.34
6. Step 6: Final answer
   x = 990.76