Finding the Fourth Proportional to 2,665,538.42, 3,998,307.63 and 772,281.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665,538.42 : 3,998,307.63 = 772,281.14 : x
2. Step 2: Convert to fraction form
   2,665,538.42/3,998,307.63 = 772,281.14/x
3. Step 3: Cross multiply
   2,665,538.42x = 3,998,307.63 × 772,281.14
4. Step 4: Simplify right side
   2,665,538.42x = 3,087,817,574,567.10
5. Step 5: Solve for x
   x = 3,087,817,574,567.10/2,665,538.42
6. Step 6: Final answer
   x = 1,158,421.71