Finding the Fourth Proportional to 1,636,419.89, 2,455,016.18 and 514,488.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,636,419.89 : 2,455,016.18 = 514,488.89 : x
2. Step 2: Convert to fraction form
   1,636,419.89/2,455,016.18 = 514,488.89/x
3. Step 3: Cross multiply
   1,636,419.89x = 2,455,016.18 × 514,488.89
4. Step 4: Simplify right side
   1,636,419.89x = 1,263,078,552,945.34
5. Step 5: Solve for x
   x = 1,263,078,552,945.34/1,636,419.89
6. Step 6: Final answer
   x = 771,854.80