Finding the Fourth Proportional to 1,389,619.18, 2,084,596.89 and 490,877.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,389,619.18 : 2,084,596.89 = 490,877.00 : x
2. Step 2: Convert to fraction form
   1,389,619.18/2,084,596.89 = 490,877.00/x
3. Step 3: Cross multiply
   1,389,619.18x = 2,084,596.89 × 490,877.00
4. Step 4: Simplify right side
   1,389,619.18x = 1,023,280,657,149.55
5. Step 5: Solve for x
   x = 1,023,280,657,149.55/1,389,619.18
6. Step 6: Final answer
   x = 736,374.88