Finding the Fourth Proportional to 1,004.07, 1,385.61 and 555.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,004.07 : 1,385.61 = 555.94 : x
2. Step 2: Convert to fraction form
   1,004.07/1,385.61 = 555.94/x
3. Step 3: Cross multiply
   1,004.07x = 1,385.61 × 555.94
4. Step 4: Simplify right side
   1,004.07x = 770,316.02
5. Step 5: Solve for x
   x = 770,316.02/1,004.07
6. Step 6: Final answer
   x = 767.19