Finding the Fourth Proportional to 1,054,522.66, 1,581,456.69 and 380,516.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,054,522.66 : 1,581,456.69 = 380,516.50 : x
2. Step 2: Convert to fraction form
   1,054,522.66/1,581,456.69 = 380,516.50/x
3. Step 3: Cross multiply
   1,054,522.66x = 1,581,456.69 × 380,516.50
4. Step 4: Simplify right side
   1,054,522.66x = 601,770,364,580.39
5. Step 5: Solve for x
   x = 601,770,364,580.39/1,054,522.66
6. Step 6: Final answer
   x = 570,656.65