Finding the Fourth Proportional to 1,095.63, 1,640.82 and 607.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,095.63 : 1,640.82 = 607.47 : x
2. Step 2: Convert to fraction form
   1,095.63/1,640.82 = 607.47/x
3. Step 3: Cross multiply
   1,095.63x = 1,640.82 × 607.47
4. Step 4: Simplify right side
   1,095.63x = 996,748.93
5. Step 5: Solve for x
   x = 996,748.93/1,095.63
6. Step 6: Final answer
   x = 909.75