Finding the Fourth Proportional to 1,061.64, 1,591.50 and 368.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.64 : 1,591.50 = 368.07 : x
2. Step 2: Convert to fraction form
   1,061.64/1,591.50 = 368.07/x
3. Step 3: Cross multiply
   1,061.64x = 1,591.50 × 368.07
4. Step 4: Simplify right side
   1,061.64x = 585,781.22
5. Step 5: Solve for x
   x = 585,781.22/1,061.64
6. Step 6: Final answer
   x = 551.77