Finding the Fourth Proportional to 1,061.18, 1,590.32 and 476.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.18 : 1,590.32 = 476.36 : x
2. Step 2: Convert to fraction form
   1,061.18/1,590.32 = 476.36/x
3. Step 3: Cross multiply
   1,061.18x = 1,590.32 × 476.36
4. Step 4: Simplify right side
   1,061.18x = 757,554.50
5. Step 5: Solve for x
   x = 757,554.50/1,061.18
6. Step 6: Final answer
   x = 713.88