Finding the Fourth Proportional to 1,007,645.82, 1,390,499.91 and 554,849.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,007,645.82 : 1,390,499.91 = 554,849.34 : x
2. Step 2: Convert to fraction form
   1,007,645.82/1,390,499.91 = 554,849.34/x
3. Step 3: Cross multiply
   1,007,645.82x = 1,390,499.91 × 554,849.34
4. Step 4: Simplify right side
   1,007,645.82x = 771,517,957,333.56
5. Step 5: Solve for x
   x = 771,517,957,333.56/1,007,645.82
6. Step 6: Final answer
   x = 765,663.83