Finding the Fourth Proportional to 1,393.69, 2,090.52 and 469.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,393.69 : 2,090.52 = 469.18 : x
2. Step 2: Convert to fraction form
   1,393.69/2,090.52 = 469.18/x
3. Step 3: Cross multiply
   1,393.69x = 2,090.52 × 469.18
4. Step 4: Simplify right side
   1,393.69x = 980,830.17
5. Step 5: Solve for x
   x = 980,830.17/1,393.69
6. Step 6: Final answer
   x = 703.76