Finding the Fourth Proportional to 1,507.34, 2,080.32 and 917.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,507.34 : 2,080.32 = 917.84 : x
2. Step 2: Convert to fraction form
   1,507.34/2,080.32 = 917.84/x
3. Step 3: Cross multiply
   1,507.34x = 2,080.32 × 917.84
4. Step 4: Simplify right side
   1,507.34x = 1,909,400.91
5. Step 5: Solve for x
   x = 1,909,400.91/1,507.34
6. Step 6: Final answer
   x = 1,266.74