Finding the Fourth Proportional to 1,038.74, 1,432.71 and 706.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,038.74 : 1,432.71 = 706.59 : x
2. Step 2: Convert to fraction form
   1,038.74/1,432.71 = 706.59/x
3. Step 3: Cross multiply
   1,038.74x = 1,432.71 × 706.59
4. Step 4: Simplify right side
   1,038.74x = 1,012,338.56
5. Step 5: Solve for x
   x = 1,012,338.56/1,038.74
6. Step 6: Final answer
   x = 974.59