Finding the Fourth Proportional to 1,091,191.86, 1,636,791.03 and 381,219.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,091,191.86 : 1,636,791.03 = 381,219.98 : x
2. Step 2: Convert to fraction form
   1,091,191.86/1,636,791.03 = 381,219.98/x
3. Step 3: Cross multiply
   1,091,191.86x = 1,636,791.03 × 381,219.98
4. Step 4: Simplify right side
   1,091,191.86x = 623,977,435,536.82
5. Step 5: Solve for x
   x = 623,977,435,536.82/1,091,191.86
6. Step 6: Final answer
   x = 571,831.09