Finding the Fourth Proportional to 1,038.36, 1,556.46 and 713.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,038.36 : 1,556.46 = 713.82 : x
2. Step 2: Convert to fraction form
   1,038.36/1,556.46 = 713.82/x
3. Step 3: Cross multiply
   1,038.36x = 1,556.46 × 713.82
4. Step 4: Simplify right side
   1,038.36x = 1,111,032.28
5. Step 5: Solve for x
   x = 1,111,032.28/1,038.36
6. Step 6: Final answer
   x = 1,069.99