Finding the Fourth Proportional to 1,389,613.88, 2,084,588.94 and 490,871.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,389,613.88 : 2,084,588.94 = 490,871.69 : x
2. Step 2: Convert to fraction form
   1,389,613.88/2,084,588.94 = 490,871.69/x
3. Step 3: Cross multiply
   1,389,613.88x = 2,084,588.94 × 490,871.69
4. Step 4: Simplify right side
   1,389,613.88x = 1,023,265,705,513.38
5. Step 5: Solve for x
   x = 1,023,265,705,513.38/1,389,613.88
6. Step 6: Final answer
   x = 736,366.93