Finding the Fourth Proportional to 1,007,300.16, 1,390,158.72 and 554,676.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,007,300.16 : 1,390,158.72 = 554,676.48 : x
2. Step 2: Convert to fraction form
   1,007,300.16/1,390,158.72 = 554,676.48/x
3. Step 3: Cross multiply
   1,007,300.16x = 1,390,158.72 × 554,676.48
4. Step 4: Simplify right side
   1,007,300.16x = 771,088,345,450.91
5. Step 5: Solve for x
   x = 771,088,345,450.91/1,007,300.16
6. Step 6: Final answer
   x = 765,500.07