Finding the Fourth Proportional to 1,301.86, 1,953.18 and 436.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,301.86 : 1,953.18 = 436.18 : x
2. Step 2: Convert to fraction form
   1,301.86/1,953.18 = 436.18/x
3. Step 3: Cross multiply
   1,301.86x = 1,953.18 × 436.18
4. Step 4: Simplify right side
   1,301.86x = 851,938.05
5. Step 5: Solve for x
   x = 851,938.05/1,301.86
6. Step 6: Final answer
   x = 654.40