Finding the Fourth Proportional to 1,005,085.68, 1,507,038.12 and 406,065.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,005,085.68 : 1,507,038.12 = 406,065.84 : x
2. Step 2: Convert to fraction form
   1,005,085.68/1,507,038.12 = 406,065.84/x
3. Step 3: Cross multiply
   1,005,085.68x = 1,507,038.12 × 406,065.84
4. Step 4: Simplify right side
   1,005,085.68x = 611,956,700,109.82
5. Step 5: Solve for x
   x = 611,956,700,109.82/1,005,085.68
6. Step 6: Final answer
   x = 608,860.23