Finding the Fourth Proportional to 1,003.10, 1,506.95 and 711.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,003.10 : 1,506.95 = 711.32 : x
2. Step 2: Convert to fraction form
   1,003.10/1,506.95 = 711.32/x
3. Step 3: Cross multiply
   1,003.10x = 1,506.95 × 711.32
4. Step 4: Simplify right side
   1,003.10x = 1,071,925.61
5. Step 5: Solve for x
   x = 1,071,925.61/1,003.10
6. Step 6: Final answer
   x = 1,068.62