Finding the Fourth Proportional to 2,653,758.98, 3,980,642.64 and 807,287.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,653,758.98 : 3,980,642.64 = 807,287.02 : x
2. Step 2: Convert to fraction form
   2,653,758.98/3,980,642.64 = 807,287.02/x
3. Step 3: Cross multiply
   2,653,758.98x = 3,980,642.64 × 807,287.02
4. Step 4: Simplify right side
   2,653,758.98x = 3,213,521,134,530.53
5. Step 5: Solve for x
   x = 3,213,521,134,530.53/2,653,758.98
6. Step 6: Final answer
   x = 1,210,931.80