Finding the Fourth Proportional to 1,068.51, 1,474.47 and 648.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,068.51 : 1,474.47 = 648.93 : x
2. Step 2: Convert to fraction form
   1,068.51/1,474.47 = 648.93/x
3. Step 3: Cross multiply
   1,068.51x = 1,474.47 × 648.93
4. Step 4: Simplify right side
   1,068.51x = 956,827.82
5. Step 5: Solve for x
   x = 956,827.82/1,068.51
6. Step 6: Final answer
   x = 895.48